704 lines
18 KiB
LLVM
704 lines
18 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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target datalayout = "e-p:64:64:64-p1:16:16:16-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
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; Optimize subtracts.
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;
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; RUN: opt < %s -instcombine -S | FileCheck %s
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define i32 @test1(i32 %A) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: ret i32 0
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;
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%B = sub i32 %A, %A
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ret i32 %B
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}
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define i32 @test2(i32 %A) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: ret i32 [[A:%.*]]
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;
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%B = sub i32 %A, 0
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ret i32 %B
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}
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define i32 @test3(i32 %A) {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: ret i32 [[A:%.*]]
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;
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%B = sub i32 0, %A
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%C = sub i32 0, %B
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ret i32 %C
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}
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define i32 @test4(i32 %A, i32 %x) {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: [[C:%.*]] = add i32 [[X:%.*]], [[A:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%B = sub i32 0, %A
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%C = sub i32 %x, %B
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ret i32 %C
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}
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define i32 @test5(i32 %A, i32 %B, i32 %C) {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: [[D1:%.*]] = sub i32 [[C:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[E:%.*]] = add i32 [[D1]], [[A:%.*]]
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; CHECK-NEXT: ret i32 [[E]]
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;
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%D = sub i32 %B, %C
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%E = sub i32 %A, %D
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ret i32 %E
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}
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define i32 @test6(i32 %A, i32 %B) {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: [[B_NOT:%.*]] = xor i32 [[B:%.*]], -1
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; CHECK-NEXT: [[D:%.*]] = and i32 [[B_NOT]], [[A:%.*]]
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; CHECK-NEXT: ret i32 [[D]]
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;
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%C = and i32 %A, %B
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%D = sub i32 %A, %C
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ret i32 %D
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}
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define i32 @test7(i32 %A) {
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; CHECK-LABEL: @test7(
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; CHECK-NEXT: [[B:%.*]] = xor i32 [[A:%.*]], -1
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; CHECK-NEXT: ret i32 [[B]]
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;
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%B = sub i32 -1, %A
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ret i32 %B
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}
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define i32 @test8(i32 %A) {
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; CHECK-LABEL: @test8(
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; CHECK-NEXT: [[C:%.*]] = shl i32 [[A:%.*]], 3
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; CHECK-NEXT: ret i32 [[C]]
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;
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%B = mul i32 9, %A
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%C = sub i32 %B, %A
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ret i32 %C
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}
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define i32 @test9(i32 %A) {
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; CHECK-LABEL: @test9(
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; CHECK-NEXT: [[C:%.*]] = mul i32 [[A:%.*]], -2
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; CHECK-NEXT: ret i32 [[C]]
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;
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%B = mul i32 3, %A
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%C = sub i32 %A, %B
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ret i32 %C
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}
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define i32 @test10(i32 %A, i32 %B) {
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; CHECK-LABEL: @test10(
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; CHECK-NEXT: [[E:%.*]] = mul i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: ret i32 [[E]]
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;
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%C = sub i32 0, %A
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%D = sub i32 0, %B
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%E = mul i32 %C, %D
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ret i32 %E
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}
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define i32 @test10a(i32 %A) {
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; CHECK-LABEL: @test10a(
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; CHECK-NEXT: [[E:%.*]] = mul i32 [[A:%.*]], -7
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; CHECK-NEXT: ret i32 [[E]]
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;
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%C = sub i32 0, %A
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%E = mul i32 %C, 7
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ret i32 %E
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}
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define i1 @test11(i8 %A, i8 %B) {
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; CHECK-LABEL: @test11(
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; CHECK-NEXT: [[D:%.*]] = icmp ne i8 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: ret i1 [[D]]
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;
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%C = sub i8 %A, %B
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%D = icmp ne i8 %C, 0
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ret i1 %D
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}
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define <2 x i1> @test11vec(<2 x i8> %A, <2 x i8> %B) {
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; CHECK-LABEL: @test11vec(
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; CHECK-NEXT: [[D:%.*]] = icmp ne <2 x i8> [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: ret <2 x i1> [[D]]
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;
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%C = sub <2 x i8> %A, %B
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%D = icmp ne <2 x i8> %C, zeroinitializer
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ret <2 x i1> %D
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}
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define i32 @test12(i32 %A) {
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; CHECK-LABEL: @test12(
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; CHECK-NEXT: [[C:%.*]] = lshr i32 [[A:%.*]], 31
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; CHECK-NEXT: ret i32 [[C]]
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;
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%B = ashr i32 %A, 31
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%C = sub i32 0, %B
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ret i32 %C
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}
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define i32 @test13(i32 %A) {
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; CHECK-LABEL: @test13(
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; CHECK-NEXT: [[C:%.*]] = ashr i32 [[A:%.*]], 31
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; CHECK-NEXT: ret i32 [[C]]
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;
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%B = lshr i32 %A, 31
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%C = sub i32 0, %B
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ret i32 %C
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}
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define <2 x i32> @test12vec(<2 x i32> %A) {
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; CHECK-LABEL: @test12vec(
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; CHECK-NEXT: [[C:%.*]] = lshr <2 x i32> [[A:%.*]], <i32 31, i32 31>
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; CHECK-NEXT: ret <2 x i32> [[C]]
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;
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%B = ashr <2 x i32> %A, <i32 31, i32 31>
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%C = sub <2 x i32> zeroinitializer, %B
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ret <2 x i32> %C
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}
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define <2 x i32> @test13vec(<2 x i32> %A) {
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; CHECK-LABEL: @test13vec(
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; CHECK-NEXT: [[C:%.*]] = ashr <2 x i32> [[A:%.*]], <i32 31, i32 31>
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; CHECK-NEXT: ret <2 x i32> [[C]]
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;
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%B = lshr <2 x i32> %A, <i32 31, i32 31>
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%C = sub <2 x i32> zeroinitializer, %B
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ret <2 x i32> %C
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}
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define i32 @test15(i32 %A, i32 %B) {
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; CHECK-LABEL: @test15(
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; CHECK-NEXT: [[C:%.*]] = sub i32 0, [[A:%.*]]
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; CHECK-NEXT: [[D:%.*]] = srem i32 [[B:%.*]], [[C]]
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; CHECK-NEXT: ret i32 [[D]]
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;
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%C = sub i32 0, %A
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%D = srem i32 %B, %C
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ret i32 %D
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}
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define i32 @test16(i32 %A) {
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; CHECK-LABEL: @test16(
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; CHECK-NEXT: [[Y:%.*]] = sdiv i32 [[A:%.*]], -1123
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; CHECK-NEXT: ret i32 [[Y]]
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;
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%X = sdiv i32 %A, 1123
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%Y = sub i32 0, %X
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ret i32 %Y
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}
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; Can't fold subtract here because negation it might oveflow.
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; PR3142
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define i32 @test17(i32 %A) {
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; CHECK-LABEL: @test17(
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; CHECK-NEXT: [[B:%.*]] = sub i32 0, [[A:%.*]]
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; CHECK-NEXT: [[C:%.*]] = sdiv i32 [[B]], 1234
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; CHECK-NEXT: ret i32 [[C]]
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;
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%B = sub i32 0, %A
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%C = sdiv i32 %B, 1234
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ret i32 %C
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}
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define i64 @test18(i64 %Y) {
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; CHECK-LABEL: @test18(
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; CHECK-NEXT: ret i64 0
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;
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%tmp.4 = shl i64 %Y, 2
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%tmp.12 = shl i64 %Y, 2
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%tmp.8 = sub i64 %tmp.4, %tmp.12
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ret i64 %tmp.8
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}
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define i32 @test19(i32 %X, i32 %Y) {
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; CHECK-LABEL: @test19(
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; CHECK-NEXT: ret i32 [[X:%.*]]
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;
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%Z = sub i32 %X, %Y
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%Q = add i32 %Z, %Y
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ret i32 %Q
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}
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define i1 @test20(i32 %g, i32 %h) {
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; CHECK-LABEL: @test20(
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; CHECK-NEXT: [[TMP_4:%.*]] = icmp ne i32 [[H:%.*]], 0
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; CHECK-NEXT: ret i1 [[TMP_4]]
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;
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%tmp.2 = sub i32 %g, %h
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%tmp.4 = icmp ne i32 %tmp.2, %g
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ret i1 %tmp.4
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}
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define i1 @test21(i32 %g, i32 %h) {
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; CHECK-LABEL: @test21(
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; CHECK-NEXT: [[TMP_4:%.*]] = icmp ne i32 [[H:%.*]], 0
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; CHECK-NEXT: ret i1 [[TMP_4]]
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;
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%tmp.2 = sub i32 %g, %h
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%tmp.4 = icmp ne i32 %tmp.2, %g
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ret i1 %tmp.4
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}
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; PR2298
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define zeroext i1 @test22(i32 %a, i32 %b) nounwind {
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; CHECK-LABEL: @test22(
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; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i32 [[B:%.*]], [[A:%.*]]
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; CHECK-NEXT: ret i1 [[TMP5]]
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;
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%tmp2 = sub i32 0, %a
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%tmp4 = sub i32 0, %b
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%tmp5 = icmp eq i32 %tmp2, %tmp4
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ret i1 %tmp5
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}
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; rdar://7362831
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define i32 @test23(i8* %P, i64 %A){
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; CHECK-LABEL: @test23(
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i64 [[A:%.*]] to i32
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; CHECK-NEXT: ret i32 [[TMP1]]
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;
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%B = getelementptr inbounds i8, i8* %P, i64 %A
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%C = ptrtoint i8* %B to i64
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%D = trunc i64 %C to i32
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%E = ptrtoint i8* %P to i64
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%F = trunc i64 %E to i32
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%G = sub i32 %D, %F
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ret i32 %G
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}
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define i8 @test23_as1(i8 addrspace(1)* %P, i16 %A) {
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; CHECK-LABEL: @test23_as1(
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i16 [[A:%.*]] to i8
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; CHECK-NEXT: ret i8 [[TMP1]]
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;
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%B = getelementptr inbounds i8, i8 addrspace(1)* %P, i16 %A
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%C = ptrtoint i8 addrspace(1)* %B to i16
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%D = trunc i16 %C to i8
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%E = ptrtoint i8 addrspace(1)* %P to i16
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%F = trunc i16 %E to i8
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%G = sub i8 %D, %F
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ret i8 %G
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}
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define i64 @test24(i8* %P, i64 %A){
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; CHECK-LABEL: @test24(
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; CHECK-NEXT: ret i64 [[A:%.*]]
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;
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%B = getelementptr inbounds i8, i8* %P, i64 %A
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%C = ptrtoint i8* %B to i64
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%E = ptrtoint i8* %P to i64
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%G = sub i64 %C, %E
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ret i64 %G
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}
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define i16 @test24_as1(i8 addrspace(1)* %P, i16 %A) {
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; CHECK-LABEL: @test24_as1(
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; CHECK-NEXT: ret i16 [[A:%.*]]
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;
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%B = getelementptr inbounds i8, i8 addrspace(1)* %P, i16 %A
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%C = ptrtoint i8 addrspace(1)* %B to i16
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%E = ptrtoint i8 addrspace(1)* %P to i16
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%G = sub i16 %C, %E
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ret i16 %G
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}
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define i64 @test24a(i8* %P, i64 %A){
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; CHECK-LABEL: @test24a(
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; CHECK-NEXT: [[DIFF_NEG:%.*]] = sub i64 0, [[A:%.*]]
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; CHECK-NEXT: ret i64 [[DIFF_NEG]]
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;
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%B = getelementptr inbounds i8, i8* %P, i64 %A
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%C = ptrtoint i8* %B to i64
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%E = ptrtoint i8* %P to i64
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%G = sub i64 %E, %C
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ret i64 %G
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}
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define i16 @test24a_as1(i8 addrspace(1)* %P, i16 %A) {
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; CHECK-LABEL: @test24a_as1(
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; CHECK-NEXT: [[DIFF_NEG:%.*]] = sub i16 0, [[A:%.*]]
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; CHECK-NEXT: ret i16 [[DIFF_NEG]]
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;
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%B = getelementptr inbounds i8, i8 addrspace(1)* %P, i16 %A
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%C = ptrtoint i8 addrspace(1)* %B to i16
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%E = ptrtoint i8 addrspace(1)* %P to i16
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%G = sub i16 %E, %C
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ret i16 %G
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}
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@Arr = external global [42 x i16]
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define i64 @test24b(i8* %P, i64 %A){
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; CHECK-LABEL: @test24b(
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; CHECK-NEXT: [[B_IDX:%.*]] = shl nuw i64 [[A:%.*]], 1
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; CHECK-NEXT: ret i64 [[B_IDX]]
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;
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%B = getelementptr inbounds [42 x i16], [42 x i16]* @Arr, i64 0, i64 %A
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%C = ptrtoint i16* %B to i64
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%G = sub i64 %C, ptrtoint ([42 x i16]* @Arr to i64)
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ret i64 %G
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}
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define i64 @test25(i8* %P, i64 %A){
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; CHECK-LABEL: @test25(
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; CHECK-NEXT: [[B_IDX:%.*]] = shl nuw i64 [[A:%.*]], 1
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; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[B_IDX]], -84
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; CHECK-NEXT: ret i64 [[TMP1]]
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;
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%B = getelementptr inbounds [42 x i16], [42 x i16]* @Arr, i64 0, i64 %A
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%C = ptrtoint i16* %B to i64
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%G = sub i64 %C, ptrtoint (i16* getelementptr ([42 x i16], [42 x i16]* @Arr, i64 1, i64 0) to i64)
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ret i64 %G
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}
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@Arr_as1 = external addrspace(1) global [42 x i16]
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define i16 @test25_as1(i8 addrspace(1)* %P, i64 %A) {
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; CHECK-LABEL: @test25_as1(
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i64 [[A:%.*]] to i16
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; CHECK-NEXT: [[B_IDX:%.*]] = shl nuw i16 [[TMP1]], 1
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; CHECK-NEXT: [[TMP2:%.*]] = add i16 [[B_IDX]], -84
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; CHECK-NEXT: ret i16 [[TMP2]]
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;
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%B = getelementptr inbounds [42 x i16], [42 x i16] addrspace(1)* @Arr_as1, i64 0, i64 %A
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%C = ptrtoint i16 addrspace(1)* %B to i16
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%G = sub i16 %C, ptrtoint (i16 addrspace(1)* getelementptr ([42 x i16], [42 x i16] addrspace(1)* @Arr_as1, i64 1, i64 0) to i16)
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ret i16 %G
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}
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define i32 @test26(i32 %x) {
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; CHECK-LABEL: @test26(
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; CHECK-NEXT: [[NEG:%.*]] = shl i32 -3, [[X:%.*]]
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; CHECK-NEXT: ret i32 [[NEG]]
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;
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%shl = shl i32 3, %x
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%neg = sub i32 0, %shl
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ret i32 %neg
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}
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define i32 @test27(i32 %x, i32 %y) {
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; CHECK-LABEL: @test27(
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; CHECK-NEXT: [[TMP1:%.*]] = shl i32 [[Y:%.*]], 3
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; CHECK-NEXT: [[SUB:%.*]] = add i32 [[TMP1]], [[X:%.*]]
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; CHECK-NEXT: ret i32 [[SUB]]
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;
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%mul = mul i32 %y, -8
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%sub = sub i32 %x, %mul
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ret i32 %sub
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}
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define i32 @test28(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @test28(
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; CHECK-NEXT: [[TMP1:%.*]] = mul i32 [[Z:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[SUB:%.*]] = add i32 [[TMP1]], [[X:%.*]]
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; CHECK-NEXT: ret i32 [[SUB]]
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;
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%neg = sub i32 0, %z
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%mul = mul i32 %neg, %y
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%sub = sub i32 %x, %mul
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ret i32 %sub
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}
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define i64 @test29(i8* %foo, i64 %i, i64 %j) {
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; CHECK-LABEL: @test29(
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; CHECK-NEXT: [[TMP1:%.*]] = sub i64 [[I:%.*]], [[J:%.*]]
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; CHECK-NEXT: ret i64 [[TMP1]]
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;
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%gep1 = getelementptr inbounds i8, i8* %foo, i64 %i
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%gep2 = getelementptr inbounds i8, i8* %foo, i64 %j
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%cast1 = ptrtoint i8* %gep1 to i64
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%cast2 = ptrtoint i8* %gep2 to i64
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%sub = sub i64 %cast1, %cast2
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ret i64 %sub
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}
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define i64 @test30(i8* %foo, i64 %i, i64 %j) {
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; CHECK-LABEL: @test30(
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; CHECK-NEXT: [[GEP1_IDX:%.*]] = shl nuw i64 [[I:%.*]], 2
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; CHECK-NEXT: [[TMP1:%.*]] = sub i64 [[GEP1_IDX]], [[J:%.*]]
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; CHECK-NEXT: ret i64 [[TMP1]]
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;
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%bit = bitcast i8* %foo to i32*
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%gep1 = getelementptr inbounds i32, i32* %bit, i64 %i
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%gep2 = getelementptr inbounds i8, i8* %foo, i64 %j
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%cast1 = ptrtoint i32* %gep1 to i64
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%cast2 = ptrtoint i8* %gep2 to i64
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%sub = sub i64 %cast1, %cast2
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ret i64 %sub
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}
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define i16 @test30_as1(i8 addrspace(1)* %foo, i16 %i, i16 %j) {
|
|
; CHECK-LABEL: @test30_as1(
|
|
; CHECK-NEXT: [[GEP1_IDX:%.*]] = shl nuw i16 [[I:%.*]], 2
|
|
; CHECK-NEXT: [[TMP1:%.*]] = sub i16 [[GEP1_IDX]], [[J:%.*]]
|
|
; CHECK-NEXT: ret i16 [[TMP1]]
|
|
;
|
|
%bit = bitcast i8 addrspace(1)* %foo to i32 addrspace(1)*
|
|
%gep1 = getelementptr inbounds i32, i32 addrspace(1)* %bit, i16 %i
|
|
%gep2 = getelementptr inbounds i8, i8 addrspace(1)* %foo, i16 %j
|
|
%cast1 = ptrtoint i32 addrspace(1)* %gep1 to i16
|
|
%cast2 = ptrtoint i8 addrspace(1)* %gep2 to i16
|
|
%sub = sub i16 %cast1, %cast2
|
|
ret i16 %sub
|
|
}
|
|
|
|
define <2 x i64> @test31(<2 x i64> %A) {
|
|
; CHECK-LABEL: @test31(
|
|
; CHECK-NEXT: [[SUB:%.*]] = add <2 x i64> [[A:%.*]], <i64 3, i64 4>
|
|
; CHECK-NEXT: ret <2 x i64> [[SUB]]
|
|
;
|
|
%xor = xor <2 x i64> %A, <i64 -1, i64 -1>
|
|
%sub = sub <2 x i64> <i64 2, i64 3>, %xor
|
|
ret <2 x i64> %sub
|
|
}
|
|
|
|
define <2 x i64> @test32(<2 x i64> %A) {
|
|
; CHECK-LABEL: @test32(
|
|
; CHECK-NEXT: [[SUB:%.*]] = sub <2 x i64> <i64 3, i64 4>, [[A:%.*]]
|
|
; CHECK-NEXT: ret <2 x i64> [[SUB]]
|
|
;
|
|
%add = add <2 x i64> %A, <i64 -1, i64 -1>
|
|
%sub = sub <2 x i64> <i64 2, i64 3>, %add
|
|
ret <2 x i64> %sub
|
|
}
|
|
|
|
define <2 x i64> @test33(<2 x i1> %A) {
|
|
; CHECK-LABEL: @test33(
|
|
; CHECK-NEXT: [[SUB:%.*]] = sext <2 x i1> [[A:%.*]] to <2 x i64>
|
|
; CHECK-NEXT: ret <2 x i64> [[SUB]]
|
|
;
|
|
%ext = zext <2 x i1> %A to <2 x i64>
|
|
%sub = sub <2 x i64> zeroinitializer, %ext
|
|
ret <2 x i64> %sub
|
|
}
|
|
|
|
define <2 x i64> @test34(<2 x i1> %A) {
|
|
; CHECK-LABEL: @test34(
|
|
; CHECK-NEXT: [[SUB:%.*]] = zext <2 x i1> [[A:%.*]] to <2 x i64>
|
|
; CHECK-NEXT: ret <2 x i64> [[SUB]]
|
|
;
|
|
%ext = sext <2 x i1> %A to <2 x i64>
|
|
%sub = sub <2 x i64> zeroinitializer, %ext
|
|
ret <2 x i64> %sub
|
|
}
|
|
|
|
define <2 x i64> @test35(<2 x i64> %A) {
|
|
; CHECK-LABEL: @test35(
|
|
; CHECK-NEXT: [[SUB:%.*]] = mul <2 x i64> [[A:%.*]], <i64 -2, i64 -3>
|
|
; CHECK-NEXT: ret <2 x i64> [[SUB]]
|
|
;
|
|
%mul = mul <2 x i64> %A, <i64 3, i64 4>
|
|
%sub = sub <2 x i64> %A, %mul
|
|
ret <2 x i64> %sub
|
|
}
|
|
|
|
define <2 x i64> @test36(<2 x i64> %A) {
|
|
; CHECK-LABEL: @test36(
|
|
; CHECK-NEXT: [[SUB:%.*]] = mul <2 x i64> [[A:%.*]], <i64 7, i64 15>
|
|
; CHECK-NEXT: ret <2 x i64> [[SUB]]
|
|
;
|
|
%shl = shl <2 x i64> %A, <i64 3, i64 4>
|
|
%sub = sub <2 x i64> %shl, %A
|
|
ret <2 x i64> %sub
|
|
}
|
|
|
|
define <2 x i32> @test37(<2 x i32> %A) {
|
|
; CHECK-LABEL: @test37(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = icmp eq <2 x i32> [[A:%.*]], <i32 -2147483648, i32 -2147483648>
|
|
; CHECK-NEXT: [[SUB:%.*]] = sext <2 x i1> [[TMP1]] to <2 x i32>
|
|
; CHECK-NEXT: ret <2 x i32> [[SUB]]
|
|
;
|
|
%div = sdiv <2 x i32> %A, <i32 -2147483648, i32 -2147483648>
|
|
%sub = sub nsw <2 x i32> zeroinitializer, %div
|
|
ret <2 x i32> %sub
|
|
}
|
|
|
|
define i32 @test38(i32 %A) {
|
|
; CHECK-LABEL: @test38(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i32 [[A:%.*]], -2147483648
|
|
; CHECK-NEXT: [[SUB:%.*]] = sext i1 [[TMP1]] to i32
|
|
; CHECK-NEXT: ret i32 [[SUB]]
|
|
;
|
|
%div = sdiv i32 %A, -2147483648
|
|
%sub = sub nsw i32 0, %div
|
|
ret i32 %sub
|
|
}
|
|
|
|
define i32 @test39(i32 %A, i32 %x) {
|
|
; CHECK-LABEL: @test39(
|
|
; CHECK-NEXT: [[C:%.*]] = add i32 [[X:%.*]], [[A:%.*]]
|
|
; CHECK-NEXT: ret i32 [[C]]
|
|
;
|
|
%B = sub i32 0, %A
|
|
%C = sub nsw i32 %x, %B
|
|
ret i32 %C
|
|
}
|
|
|
|
define i16 @test40(i16 %a, i16 %b) {
|
|
; CHECK-LABEL: @test40(
|
|
; CHECK-NEXT: [[ASHR:%.*]] = ashr i16 [[A:%.*]], 1
|
|
; CHECK-NEXT: [[ASHR1:%.*]] = ashr i16 [[B:%.*]], 1
|
|
; CHECK-NEXT: [[SUB:%.*]] = sub nsw i16 [[ASHR]], [[ASHR1]]
|
|
; CHECK-NEXT: ret i16 [[SUB]]
|
|
;
|
|
%ashr = ashr i16 %a, 1
|
|
%ashr1 = ashr i16 %b, 1
|
|
%sub = sub i16 %ashr, %ashr1
|
|
ret i16 %sub
|
|
}
|
|
|
|
define i32 @test41(i16 %a, i16 %b) {
|
|
; CHECK-LABEL: @test41(
|
|
; CHECK-NEXT: [[CONV:%.*]] = sext i16 [[A:%.*]] to i32
|
|
; CHECK-NEXT: [[CONV1:%.*]] = sext i16 [[B:%.*]] to i32
|
|
; CHECK-NEXT: [[SUB:%.*]] = sub nsw i32 [[CONV]], [[CONV1]]
|
|
; CHECK-NEXT: ret i32 [[SUB]]
|
|
;
|
|
%conv = sext i16 %a to i32
|
|
%conv1 = sext i16 %b to i32
|
|
%sub = sub i32 %conv, %conv1
|
|
ret i32 %sub
|
|
}
|
|
|
|
define i4 @test42(i4 %x, i4 %y) {
|
|
; CHECK-LABEL: @test42(
|
|
; CHECK-NEXT: [[A:%.*]] = and i4 [[Y:%.*]], 7
|
|
; CHECK-NEXT: [[B:%.*]] = and i4 [[X:%.*]], 7
|
|
; CHECK-NEXT: [[C:%.*]] = sub nsw i4 [[A]], [[B]]
|
|
; CHECK-NEXT: ret i4 [[C]]
|
|
;
|
|
%a = and i4 %y, 7
|
|
%b = and i4 %x, 7
|
|
%c = sub i4 %a, %b
|
|
ret i4 %c
|
|
}
|
|
|
|
define i4 @test43(i4 %x, i4 %y) {
|
|
; CHECK-LABEL: @test43(
|
|
; CHECK-NEXT: [[A:%.*]] = or i4 [[X:%.*]], -8
|
|
; CHECK-NEXT: [[B:%.*]] = and i4 [[Y:%.*]], 7
|
|
; CHECK-NEXT: [[C:%.*]] = sub nuw i4 [[A]], [[B]]
|
|
; CHECK-NEXT: ret i4 [[C]]
|
|
;
|
|
%a = or i4 %x, -8
|
|
%b = and i4 %y, 7
|
|
%c = sub i4 %a, %b
|
|
ret i4 %c
|
|
}
|
|
|
|
define i32 @test44(i32 %x) {
|
|
; CHECK-LABEL: @test44(
|
|
; CHECK-NEXT: [[SUB:%.*]] = add nsw i32 [[X:%.*]], -32768
|
|
; CHECK-NEXT: ret i32 [[SUB]]
|
|
;
|
|
%sub = sub nsw i32 %x, 32768
|
|
ret i32 %sub
|
|
}
|
|
|
|
define i32 @test45(i32 %x, i32 %y) {
|
|
; CHECK-LABEL: @test45(
|
|
; CHECK-NEXT: [[SUB:%.*]] = and i32 [[X:%.*]], [[Y:%.*]]
|
|
; CHECK-NEXT: ret i32 [[SUB]]
|
|
;
|
|
%or = or i32 %x, %y
|
|
%xor = xor i32 %x, %y
|
|
%sub = sub i32 %or, %xor
|
|
ret i32 %sub
|
|
}
|
|
|
|
define i32 @test46(i32 %x, i32 %y) {
|
|
; CHECK-LABEL: @test46(
|
|
; CHECK-NEXT: [[X_NOT:%.*]] = xor i32 [[X:%.*]], -1
|
|
; CHECK-NEXT: [[SUB:%.*]] = and i32 [[X_NOT]], [[Y:%.*]]
|
|
; CHECK-NEXT: ret i32 [[SUB]]
|
|
;
|
|
%or = or i32 %x, %y
|
|
%sub = sub i32 %or, %x
|
|
ret i32 %sub
|
|
}
|
|
|
|
define i32 @test47(i1 %A, i32 %B, i32 %C, i32 %D) {
|
|
; CHECK-LABEL: @test47(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = sub i32 [[D:%.*]], [[C:%.*]]
|
|
; CHECK-NEXT: [[SUB:%.*]] = select i1 [[A:%.*]], i32 [[TMP1]], i32 0
|
|
; CHECK-NEXT: ret i32 [[SUB]]
|
|
;
|
|
%sel0 = select i1 %A, i32 %D, i32 %B
|
|
%sel1 = select i1 %A, i32 %C, i32 %B
|
|
%sub = sub i32 %sel0, %sel1
|
|
ret i32 %sub
|
|
}
|
|
|
|
define i32 @test48(i1 %A, i32 %B, i32 %C, i32 %D) {
|
|
; CHECK-LABEL: @test48(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = sub i32 [[D:%.*]], [[C:%.*]]
|
|
; CHECK-NEXT: [[SUB:%.*]] = select i1 [[A:%.*]], i32 0, i32 [[TMP1]]
|
|
; CHECK-NEXT: ret i32 [[SUB]]
|
|
;
|
|
%sel0 = select i1 %A, i32 %B, i32 %D
|
|
%sel1 = select i1 %A, i32 %B, i32 %C
|
|
%sub = sub i32 %sel0, %sel1
|
|
ret i32 %sub
|
|
}
|
|
|
|
; Zext+add is more canonical than sext+sub.
|
|
|
|
define i8 @bool_sext_sub(i8 %x, i1 %y) {
|
|
; CHECK-LABEL: @bool_sext_sub(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = zext i1 [[Y:%.*]] to i8
|
|
; CHECK-NEXT: [[SUB:%.*]] = add i8 [[TMP1]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i8 [[SUB]]
|
|
;
|
|
%sext = sext i1 %y to i8
|
|
%sub = sub i8 %x, %sext
|
|
ret i8 %sub
|
|
}
|
|
|
|
; Vectors get the same transform.
|
|
|
|
define <2 x i8> @bool_sext_sub_vec(<2 x i8> %x, <2 x i1> %y) {
|
|
; CHECK-LABEL: @bool_sext_sub_vec(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = zext <2 x i1> [[Y:%.*]] to <2 x i8>
|
|
; CHECK-NEXT: [[SUB:%.*]] = add <2 x i8> [[TMP1]], [[X:%.*]]
|
|
; CHECK-NEXT: ret <2 x i8> [[SUB]]
|
|
;
|
|
%sext = sext <2 x i1> %y to <2 x i8>
|
|
%sub = sub <2 x i8> %x, %sext
|
|
ret <2 x i8> %sub
|
|
}
|
|
|
|
; NSW is preserved.
|
|
|
|
define <2 x i8> @bool_sext_sub_vec_nsw(<2 x i8> %x, <2 x i1> %y) {
|
|
; CHECK-LABEL: @bool_sext_sub_vec_nsw(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = zext <2 x i1> [[Y:%.*]] to <2 x i8>
|
|
; CHECK-NEXT: [[SUB:%.*]] = add nsw <2 x i8> [[TMP1]], [[X:%.*]]
|
|
; CHECK-NEXT: ret <2 x i8> [[SUB]]
|
|
;
|
|
%sext = sext <2 x i1> %y to <2 x i8>
|
|
%sub = sub nsw <2 x i8> %x, %sext
|
|
ret <2 x i8> %sub
|
|
}
|
|
|
|
; We favor the canonical zext+add over keeping the NUW.
|
|
|
|
define i8 @bool_sext_sub_nuw(i8 %x, i1 %y) {
|
|
; CHECK-LABEL: @bool_sext_sub_nuw(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = zext i1 [[Y:%.*]] to i8
|
|
; CHECK-NEXT: [[SUB:%.*]] = add i8 [[TMP1]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i8 [[SUB]]
|
|
;
|
|
%sext = sext i1 %y to i8
|
|
%sub = sub nuw i8 %x, %sext
|
|
ret i8 %sub
|
|
}
|
|
|