derek.holloway
7502bf64a4
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43 lines
1.6 KiB
LLVM
43 lines
1.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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; RUN: opt -S -passes='separate-const-offset-from-gep<lower-gep>' < %s | FileCheck %s
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target datalayout = "p:32:32"
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define ptr @test(ptr %p, i32 %a) {
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; CHECK-LABEL: define ptr @test(
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; CHECK-SAME: ptr [[P:%.*]], i32 [[A:%.*]]) {
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; CHECK-NEXT: [[TMP1:%.*]] = shl i32 [[A]], 2
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; CHECK-NEXT: [[UGLYGEP:%.*]] = getelementptr i8, ptr [[P]], i32 [[TMP1]]
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; CHECK-NEXT: [[UGLYGEP2:%.*]] = getelementptr i8, ptr [[UGLYGEP]], i32 -4
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; CHECK-NEXT: ret ptr [[UGLYGEP2]]
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;
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%add = add i32 %a, -1
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%gep = getelementptr i32, ptr %p, i32 %add
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ret ptr %gep
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}
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define ptr @test_overflow(ptr %p, i32 %a) {
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; CHECK-LABEL: define ptr @test_overflow(
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; CHECK-SAME: ptr [[P:%.*]], i32 [[A:%.*]]) {
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; CHECK-NEXT: [[ADD22:%.*]] = add i32 [[A]], -2147483648
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; CHECK-NEXT: [[TMP1:%.*]] = shl i32 [[ADD22]], 2
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; CHECK-NEXT: [[UGLYGEP:%.*]] = getelementptr i8, ptr [[P]], i32 [[TMP1]]
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; CHECK-NEXT: ret ptr [[UGLYGEP]]
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;
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%add1 = add i32 %a, u0x80000000
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%add2 = add i32 %add1, u0x80000000
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%arrayidx = getelementptr inbounds i32, ptr %p, i32 %add2
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ret ptr %arrayidx
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}
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define ptr @test_xor_overflow(ptr %p, i32 range(i32 0, -2147483648) %a) {
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; CHECK-LABEL: define ptr @test_xor_overflow(
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; CHECK-SAME: ptr [[P:%.*]], i32 range(i32 0, -2147483648) [[A:%.*]]) {
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; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[A]], -1
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; CHECK-NEXT: [[UGLYGEP:%.*]] = getelementptr inbounds i32, ptr [[P]], i32 [[XOR]]
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; CHECK-NEXT: ret ptr [[UGLYGEP]]
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;
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%xor = xor i32 %a, -1
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%arrayidx = getelementptr inbounds i32, ptr %p, i32 %xor
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ret ptr %arrayidx
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}
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