148 lines
5.3 KiB
LLVM
148 lines
5.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=i686-unknown | FileCheck %s
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; Shift i64 integers on 32-bit target
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define i64 @test1(i64 %X, i8 %C) nounwind {
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; CHECK-LABEL: test1:
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; CHECK: # BB#0:
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; CHECK-NEXT: pushl %esi
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; CHECK-NEXT: movb {{[0-9]+}}(%esp), %cl
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %esi
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edx
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; CHECK-NEXT: movl %esi, %eax
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; CHECK-NEXT: shll %cl, %eax
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; CHECK-NEXT: shldl %cl, %esi, %edx
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; CHECK-NEXT: testb $32, %cl
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; CHECK-NEXT: je .LBB0_2
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; CHECK-NEXT: # BB#1:
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; CHECK-NEXT: movl %eax, %edx
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; CHECK-NEXT: xorl %eax, %eax
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; CHECK-NEXT: .LBB0_2:
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; CHECK-NEXT: popl %esi
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; CHECK-NEXT: retl
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%shift.upgrd.1 = zext i8 %C to i64 ; <i64> [#uses=1]
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%Y = shl i64 %X, %shift.upgrd.1 ; <i64> [#uses=1]
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ret i64 %Y
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}
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define i64 @test2(i64 %X, i8 %C) nounwind {
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; CHECK-LABEL: test2:
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; CHECK: # BB#0:
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; CHECK-NEXT: pushl %esi
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; CHECK-NEXT: movb {{[0-9]+}}(%esp), %cl
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %esi
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; CHECK-NEXT: movl %esi, %edx
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; CHECK-NEXT: sarl %cl, %edx
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; CHECK-NEXT: shrdl %cl, %esi, %eax
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; CHECK-NEXT: testb $32, %cl
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; CHECK-NEXT: je .LBB1_2
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; CHECK-NEXT: # BB#1:
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; CHECK-NEXT: sarl $31, %esi
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; CHECK-NEXT: movl %edx, %eax
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; CHECK-NEXT: movl %esi, %edx
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; CHECK-NEXT: .LBB1_2:
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; CHECK-NEXT: popl %esi
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; CHECK-NEXT: retl
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%shift.upgrd.2 = zext i8 %C to i64 ; <i64> [#uses=1]
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%Y = ashr i64 %X, %shift.upgrd.2 ; <i64> [#uses=1]
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ret i64 %Y
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}
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define i64 @test3(i64 %X, i8 %C) nounwind {
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; CHECK-LABEL: test3:
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; CHECK: # BB#0:
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; CHECK-NEXT: pushl %esi
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; CHECK-NEXT: movb {{[0-9]+}}(%esp), %cl
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %esi
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; CHECK-NEXT: movl %esi, %edx
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; CHECK-NEXT: shrl %cl, %edx
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; CHECK-NEXT: shrdl %cl, %esi, %eax
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; CHECK-NEXT: testb $32, %cl
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; CHECK-NEXT: je .LBB2_2
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; CHECK-NEXT: # BB#1:
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; CHECK-NEXT: movl %edx, %eax
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; CHECK-NEXT: xorl %edx, %edx
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; CHECK-NEXT: .LBB2_2:
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; CHECK-NEXT: popl %esi
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; CHECK-NEXT: retl
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%shift.upgrd.3 = zext i8 %C to i64 ; <i64> [#uses=1]
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%Y = lshr i64 %X, %shift.upgrd.3 ; <i64> [#uses=1]
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ret i64 %Y
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}
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; Combine 2xi32/2xi16 shifts into SHLD
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define i32 @test4(i32 %A, i32 %B, i8 %C) nounwind {
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; CHECK-LABEL: test4:
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; CHECK: # BB#0:
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; CHECK-NEXT: movb {{[0-9]+}}(%esp), %cl
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edx
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
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; CHECK-NEXT: shldl %cl, %edx, %eax
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; CHECK-NEXT: retl
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%shift.upgrd.4 = zext i8 %C to i32 ; <i32> [#uses=1]
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%X = shl i32 %A, %shift.upgrd.4 ; <i32> [#uses=1]
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%Cv = sub i8 32, %C ; <i8> [#uses=1]
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%shift.upgrd.5 = zext i8 %Cv to i32 ; <i32> [#uses=1]
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%Y = lshr i32 %B, %shift.upgrd.5 ; <i32> [#uses=1]
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%Z = or i32 %Y, %X ; <i32> [#uses=1]
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ret i32 %Z
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}
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define i16 @test5(i16 %A, i16 %B, i8 %C) nounwind {
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; CHECK-LABEL: test5:
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; CHECK: # BB#0:
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; CHECK-NEXT: movb {{[0-9]+}}(%esp), %cl
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; CHECK-NEXT: movzwl {{[0-9]+}}(%esp), %edx
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; CHECK-NEXT: movzwl {{[0-9]+}}(%esp), %eax
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; CHECK-NEXT: shldw %cl, %dx, %ax
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; CHECK-NEXT: retl
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%shift.upgrd.6 = zext i8 %C to i16 ; <i16> [#uses=1]
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%X = shl i16 %A, %shift.upgrd.6 ; <i16> [#uses=1]
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%Cv = sub i8 16, %C ; <i8> [#uses=1]
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%shift.upgrd.7 = zext i8 %Cv to i16 ; <i16> [#uses=1]
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%Y = lshr i16 %B, %shift.upgrd.7 ; <i16> [#uses=1]
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%Z = or i16 %Y, %X ; <i16> [#uses=1]
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ret i16 %Z
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}
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; Combine 2xi32/2xi16 shifts into SHRD
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define i32 @test6(i32 %A, i32 %B, i8 %C) nounwind {
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; CHECK-LABEL: test6:
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; CHECK: # BB#0:
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; CHECK-NEXT: movb {{[0-9]+}}(%esp), %cl
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edx
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
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; CHECK-NEXT: shrdl %cl, %edx, %eax
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; CHECK-NEXT: retl
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%shift.upgrd.4 = zext i8 %C to i32 ; <i32> [#uses=1]
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%X = lshr i32 %A, %shift.upgrd.4 ; <i32> [#uses=1]
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%Cv = sub i8 32, %C ; <i8> [#uses=1]
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%shift.upgrd.5 = zext i8 %Cv to i32 ; <i32> [#uses=1]
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%Y = shl i32 %B, %shift.upgrd.5 ; <i32> [#uses=1]
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%Z = or i32 %Y, %X ; <i32> [#uses=1]
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ret i32 %Z
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}
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define i16 @test7(i16 %A, i16 %B, i8 %C) nounwind {
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; CHECK-LABEL: test7:
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; CHECK: # BB#0:
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; CHECK-NEXT: movb {{[0-9]+}}(%esp), %cl
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; CHECK-NEXT: movzwl {{[0-9]+}}(%esp), %edx
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; CHECK-NEXT: movzwl {{[0-9]+}}(%esp), %eax
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; CHECK-NEXT: shrdw %cl, %dx, %ax
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; CHECK-NEXT: retl
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%shift.upgrd.6 = zext i8 %C to i16 ; <i16> [#uses=1]
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%X = lshr i16 %A, %shift.upgrd.6 ; <i16> [#uses=1]
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%Cv = sub i8 16, %C ; <i8> [#uses=1]
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%shift.upgrd.7 = zext i8 %Cv to i16 ; <i16> [#uses=1]
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%Y = shl i16 %B, %shift.upgrd.7 ; <i16> [#uses=1]
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%Z = or i16 %Y, %X ; <i16> [#uses=1]
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ret i16 %Z
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}
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