derek.holloway
7502bf64a4
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33 lines
1.3 KiB
LLVM
33 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt < %s -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1200 -passes=separate-const-offset-from-gep -S | FileCheck %s
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; Verify that we drop "nuw" from trunc.
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define ptr @pr154116_nuw(ptr %p, i128 %i) {
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; CHECK-LABEL: define ptr @pr154116_nuw(
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; CHECK-SAME: ptr [[P:%.*]], i128 [[I:%.*]]) #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i128 [[I]] to i64
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr i32, ptr [[P]], i64 [[TMP1]]
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; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr i8, ptr [[TMP2]], i64 80
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; CHECK-NEXT: ret ptr [[ARRAYIDX2]]
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;
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%idx = add i128 %i, 20
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%idx.conv = trunc nuw i128 %idx to i64
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%arrayidx = getelementptr i32, ptr %p, i64 %idx.conv
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ret ptr %arrayidx
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}
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; Verify that we drop "nsw" from trunc.
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define ptr @pr154116_nsw(ptr %p, i128 %i) {
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; CHECK-LABEL: define ptr @pr154116_nsw(
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; CHECK-SAME: ptr [[P:%.*]], i128 [[I:%.*]]) #[[ATTR0]] {
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i128 [[I]] to i64
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr i32, ptr [[P]], i64 [[TMP1]]
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; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr i8, ptr [[TMP2]], i64 4
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; CHECK-NEXT: ret ptr [[ARRAYIDX2]]
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;
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%idx = add i128 %i, 1
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%idx.conv = trunc nsw i128 %idx to i64
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%arrayidx = getelementptr i32, ptr %p, i64 %idx.conv
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ret ptr %arrayidx
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}
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