260 lines
10 KiB
LLVM
260 lines
10 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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define i32* @test1a(i32* %p, i32* %q) {
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; CHECK-LABEL: @test1a(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i32* [[P:%.*]], [[Q:%.*]]
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; CHECK-NEXT: [[SELECT_V:%.*]] = select i1 [[CMP]], i32* [[P]], i32* [[Q]]
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; CHECK-NEXT: [[SELECT:%.*]] = getelementptr i32, i32* [[SELECT_V]], i64 4
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; CHECK-NEXT: ret i32* [[SELECT]]
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;
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%gep1 = getelementptr i32, i32* %p, i64 4
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%gep2 = getelementptr i32, i32* %q, i64 4
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%cmp = icmp ugt i32* %p, %q
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%select = select i1 %cmp, i32* %gep1, i32* %gep2
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ret i32* %select
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}
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define i32* @test1b(i32* %p, i32* %q) {
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; CHECK-LABEL: @test1b(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i32* [[P:%.*]], [[Q:%.*]]
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; CHECK-NEXT: [[SELECT_V:%.*]] = select i1 [[CMP]], i32* [[P]], i32* [[Q]]
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; CHECK-NEXT: [[SELECT:%.*]] = getelementptr i32, i32* [[SELECT_V]], i64 4
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; CHECK-NEXT: ret i32* [[SELECT]]
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;
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%gep1 = getelementptr inbounds i32, i32* %p, i64 4
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%gep2 = getelementptr i32, i32* %q, i64 4
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%cmp = icmp ugt i32* %p, %q
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%select = select i1 %cmp, i32* %gep1, i32* %gep2
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ret i32* %select
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}
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define i32* @test1c(i32* %p, i32* %q) {
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; CHECK-LABEL: @test1c(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i32* [[P:%.*]], [[Q:%.*]]
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; CHECK-NEXT: [[SELECT_V:%.*]] = select i1 [[CMP]], i32* [[P]], i32* [[Q]]
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; CHECK-NEXT: [[SELECT:%.*]] = getelementptr i32, i32* [[SELECT_V]], i64 4
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; CHECK-NEXT: ret i32* [[SELECT]]
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;
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%gep1 = getelementptr i32, i32* %p, i64 4
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%gep2 = getelementptr inbounds i32, i32* %q, i64 4
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%cmp = icmp ugt i32* %p, %q
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%select = select i1 %cmp, i32* %gep1, i32* %gep2
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ret i32* %select
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}
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define i32* @test1d(i32* %p, i32* %q) {
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; CHECK-LABEL: @test1d(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i32* [[P:%.*]], [[Q:%.*]]
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; CHECK-NEXT: [[SELECT_V:%.*]] = select i1 [[CMP]], i32* [[P]], i32* [[Q]]
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; CHECK-NEXT: [[SELECT:%.*]] = getelementptr inbounds i32, i32* [[SELECT_V]], i64 4
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; CHECK-NEXT: ret i32* [[SELECT]]
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;
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%gep1 = getelementptr inbounds i32, i32* %p, i64 4
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%gep2 = getelementptr inbounds i32, i32* %q, i64 4
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%cmp = icmp ugt i32* %p, %q
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%select = select i1 %cmp, i32* %gep1, i32* %gep2
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ret i32* %select
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}
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define i32* @test2(i32* %p, i64 %x, i64 %y) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[SELECT_V:%.*]] = select i1 [[CMP]], i64 [[X]], i64 [[Y]]
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; CHECK-NEXT: [[SELECT:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i64 [[SELECT_V]]
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; CHECK-NEXT: ret i32* [[SELECT]]
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;
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%gep1 = getelementptr inbounds i32, i32* %p, i64 %x
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%gep2 = getelementptr inbounds i32, i32* %p, i64 %y
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%cmp = icmp ugt i64 %x, %y
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%select = select i1 %cmp, i32* %gep1, i32* %gep2
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ret i32* %select
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}
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; PR50183
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define i32* @test2a(i32* %p, i64 %x, i64 %y) {
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; CHECK-LABEL: @test2a(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[SELECT_IDX:%.*]] = select i1 [[CMP]], i64 [[X]], i64 0
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; CHECK-NEXT: [[SELECT:%.*]] = getelementptr i32, i32* [[P:%.*]], i64 [[SELECT_IDX]]
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; CHECK-NEXT: ret i32* [[SELECT]]
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;
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%gep = getelementptr inbounds i32, i32* %p, i64 %x
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%cmp = icmp ugt i64 %x, %y
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%select = select i1 %cmp, i32* %gep, i32* %p
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ret i32* %select
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}
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; PR50183
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define i32* @test2b(i32* %p, i64 %x, i64 %y) {
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; CHECK-LABEL: @test2b(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[SELECT_IDX:%.*]] = select i1 [[CMP]], i64 0, i64 [[X]]
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; CHECK-NEXT: [[SELECT:%.*]] = getelementptr i32, i32* [[P:%.*]], i64 [[SELECT_IDX]]
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; CHECK-NEXT: ret i32* [[SELECT]]
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;
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%gep = getelementptr inbounds i32, i32* %p, i64 %x
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%cmp = icmp ugt i64 %x, %y
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%select = select i1 %cmp, i32* %p, i32* %gep
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ret i32* %select
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}
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; PR51069
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define i32* @test2c(i32* %p, i64 %x, i64 %y) {
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; CHECK-LABEL: @test2c(
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i64 [[X:%.*]]
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; CHECK-NEXT: [[ICMP:%.*]] = icmp ugt i64 [[X]], [[Y:%.*]]
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; CHECK-NEXT: [[SEL_IDX:%.*]] = select i1 [[ICMP]], i64 0, i64 6
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; CHECK-NEXT: [[SEL:%.*]] = getelementptr i32, i32* [[GEP1]], i64 [[SEL_IDX]]
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; CHECK-NEXT: ret i32* [[SEL]]
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;
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%gep1 = getelementptr inbounds i32, i32* %p, i64 %x
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%gep2 = getelementptr inbounds i32, i32* %gep1, i64 6
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%icmp = icmp ugt i64 %x, %y
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%sel = select i1 %icmp, i32* %gep1, i32* %gep2
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ret i32* %sel
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}
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; PR51069
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define i32* @test2d(i32* %p, i64 %x, i64 %y) {
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; CHECK-LABEL: @test2d(
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i64 [[X:%.*]]
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; CHECK-NEXT: [[ICMP:%.*]] = icmp ugt i64 [[X]], [[Y:%.*]]
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; CHECK-NEXT: [[SEL_IDX:%.*]] = select i1 [[ICMP]], i64 6, i64 0
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; CHECK-NEXT: [[SEL:%.*]] = getelementptr i32, i32* [[GEP1]], i64 [[SEL_IDX]]
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; CHECK-NEXT: ret i32* [[SEL]]
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;
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%gep1 = getelementptr inbounds i32, i32* %p, i64 %x
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%gep2 = getelementptr inbounds i32, i32* %gep1, i64 6
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%icmp = icmp ugt i64 %x, %y
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%sel = select i1 %icmp, i32* %gep2, i32* %gep1
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ret i32* %sel
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}
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; Three (or more) operand GEPs are currently expected to not be optimised,
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; though they could be in principle.
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define i32* @test3a([4 x i32]* %p, i64 %x, i64 %y) {
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; CHECK-LABEL: @test3a(
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds [4 x i32], [4 x i32]* [[P:%.*]], i64 2, i64 [[X:%.*]]
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; CHECK-NEXT: [[GEP2:%.*]] = getelementptr inbounds [4 x i32], [4 x i32]* [[P]], i64 2, i64 [[Y:%.*]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[X]], [[Y]]
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; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i32* [[GEP1]], i32* [[GEP2]]
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; CHECK-NEXT: ret i32* [[SELECT]]
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;
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%gep1 = getelementptr inbounds [4 x i32], [4 x i32]* %p, i64 2, i64 %x
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%gep2 = getelementptr inbounds [4 x i32], [4 x i32]* %p, i64 2, i64 %y
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%cmp = icmp ugt i64 %x, %y
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%select = select i1 %cmp, i32* %gep1, i32* %gep2
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ret i32* %select
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}
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define i32* @test3b([4 x i32]* %p, [4 x i32]* %q, i64 %x, i64 %y) {
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; CHECK-LABEL: @test3b(
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds [4 x i32], [4 x i32]* [[P:%.*]], i64 2, i64 [[X:%.*]]
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; CHECK-NEXT: [[GEP2:%.*]] = getelementptr inbounds [4 x i32], [4 x i32]* [[Q:%.*]], i64 2, i64 [[X]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[X]], [[Y:%.*]]
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; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i32* [[GEP1]], i32* [[GEP2]]
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; CHECK-NEXT: ret i32* [[SELECT]]
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;
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%gep1 = getelementptr inbounds [4 x i32], [4 x i32]* %p, i64 2, i64 %x
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%gep2 = getelementptr inbounds [4 x i32], [4 x i32]* %q, i64 2, i64 %x
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%cmp = icmp ugt i64 %x, %y
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%select = select i1 %cmp, i32* %gep1, i32* %gep2
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ret i32* %select
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}
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define i32* @test3c([4 x i32]* %p, i32* %q, i64 %x, i64 %y) {
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; CHECK-LABEL: @test3c(
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds [4 x i32], [4 x i32]* [[P:%.*]], i64 [[X:%.*]], i64 2
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; CHECK-NEXT: [[GEP2:%.*]] = getelementptr inbounds i32, i32* [[Q:%.*]], i64 [[X]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[X]], [[Y:%.*]]
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; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i32* [[GEP1]], i32* [[GEP2]]
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; CHECK-NEXT: ret i32* [[SELECT]]
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;
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%gep1 = getelementptr inbounds [4 x i32], [4 x i32]* %p, i64 %x, i64 2
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%gep2 = getelementptr inbounds i32, i32* %q, i64 %x
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%cmp = icmp ugt i64 %x, %y
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%select = select i1 %cmp, i32* %gep1, i32* %gep2
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ret i32* %select
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}
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define i32* @test3d(i32* %p, [4 x i32]* %q, i64 %x, i64 %y) {
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; CHECK-LABEL: @test3d(
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i64 [[X:%.*]]
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; CHECK-NEXT: [[GEP2:%.*]] = getelementptr inbounds [4 x i32], [4 x i32]* [[Q:%.*]], i64 [[X]], i64 2
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[X]], [[Y:%.*]]
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; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i32* [[GEP1]], i32* [[GEP2]]
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; CHECK-NEXT: ret i32* [[SELECT]]
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;
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%gep1 = getelementptr inbounds i32, i32* %p, i64 %x
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%gep2 = getelementptr inbounds [4 x i32], [4 x i32]* %q, i64 %x, i64 2
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%cmp = icmp ugt i64 %x, %y
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%select = select i1 %cmp, i32* %gep1, i32* %gep2
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ret i32* %select
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}
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; Shouldn't be optimised as it would mean introducing an extra select
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define i32* @test4(i32* %p, i32* %q, i64 %x, i64 %y) {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i64 [[X:%.*]]
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; CHECK-NEXT: [[GEP2:%.*]] = getelementptr inbounds i32, i32* [[Q:%.*]], i64 [[Y:%.*]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[X]], [[Y]]
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; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i32* [[GEP1]], i32* [[GEP2]]
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; CHECK-NEXT: ret i32* [[SELECT]]
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;
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%gep1 = getelementptr inbounds i32, i32* %p, i64 %x
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%gep2 = getelementptr inbounds i32, i32* %q, i64 %y
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%cmp = icmp ugt i64 %x, %y
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%select = select i1 %cmp, i32* %gep1, i32* %gep2
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ret i32* %select
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}
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; We cannot create a select with a vector condition but scalar operands.
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define <2 x i64*> @test5(i64* %p1, i64* %p2, <2 x i64> %idx, <2 x i1> %cc) {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr i64, i64* [[P1:%.*]], <2 x i64> [[IDX:%.*]]
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; CHECK-NEXT: [[GEP2:%.*]] = getelementptr i64, i64* [[P2:%.*]], <2 x i64> [[IDX]]
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; CHECK-NEXT: [[SELECT:%.*]] = select <2 x i1> [[CC:%.*]], <2 x i64*> [[GEP1]], <2 x i64*> [[GEP2]]
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; CHECK-NEXT: ret <2 x i64*> [[SELECT]]
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;
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%gep1 = getelementptr i64, i64* %p1, <2 x i64> %idx
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%gep2 = getelementptr i64, i64* %p2, <2 x i64> %idx
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%select = select <2 x i1> %cc, <2 x i64*> %gep1, <2 x i64*> %gep2
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ret <2 x i64*> %select
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}
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; PR51069 - multiple uses
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define i32* @test6(i32* %p, i64 %x, i64 %y) {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i64 [[X:%.*]]
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; CHECK-NEXT: [[ICMP:%.*]] = icmp ugt i64 [[X]], [[Y:%.*]]
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; CHECK-NEXT: [[SEL_IDX:%.*]] = select i1 [[ICMP]], i64 [[Y]], i64 0
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; CHECK-NEXT: [[SEL:%.*]] = getelementptr i32, i32* [[GEP1]], i64 [[SEL_IDX]]
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; CHECK-NEXT: call void @use_i32p(i32* [[GEP1]])
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; CHECK-NEXT: ret i32* [[SEL]]
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;
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%gep1 = getelementptr inbounds i32, i32* %p, i64 %x
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%gep2 = getelementptr inbounds i32, i32* %gep1, i64 %y
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%icmp = icmp ugt i64 %x, %y
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%sel = select i1 %icmp, i32* %gep2, i32* %gep1
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call void @use_i32p(i32* %gep1)
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ret i32* %sel
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}
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declare void @use_i32p(i32*)
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; We cannot create a select-with-idx with a vector condition but scalar idx.
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define <2 x i64*> @test7(<2 x i64*> %p1, i64 %idx, <2 x i1> %cc) {
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; CHECK-LABEL: @test7(
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr i64, <2 x i64*> [[P1:%.*]], i64 [[IDX]]
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; CHECK-NEXT: [[SELECT:%.*]] = select <2 x i1> [[CC:%.*]], <2 x i64*> [[P1:%.*]], <2 x i64*> [[GEP]]
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; CHECK-NEXT: ret <2 x i64*> [[SELECT]]
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;
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%gep = getelementptr i64, <2 x i64*> %p1, i64 %idx
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%select = select <2 x i1> %cc, <2 x i64*> %p1, <2 x i64*> %gep
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ret <2 x i64*> %select
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}
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