forked from OSchip/llvm-project
139 lines
5.6 KiB
LLVM
139 lines
5.6 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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; 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, 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 [[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* @test3c(i32* %p, [4 x i32]* %q, i64 %x, i64 %y) {
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; CHECK-LABEL: @test3c(
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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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