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0f152a55d3
This pass aims to infer alignment for instructions as a separate pass, to reduce redundant work done by InstCombine running multiple times. It runs late in the pipeline, just before the back-end passes where this information is most useful. Differential Revision: https://reviews.llvm.org/D158529
27 lines
826 B
LLVM
27 lines
826 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
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; RUN: opt -passes=infer-alignment -S < %s | FileCheck %s
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define void @load_undef_null(ptr %P) {
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; CHECK-LABEL: define void @load_undef_null
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; CHECK-SAME: (ptr [[P:%.*]]) {
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; CHECK-NEXT: [[RET_0:%.*]] = load i32, ptr undef, align 4
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; CHECK-NEXT: [[RET_1:%.*]] = load i32, ptr null, align 4294967296
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; CHECK-NEXT: ret void
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;
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%ret.0 = load i32, ptr undef
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%ret.1 = load i32, ptr null
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ret void
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}
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define void @store_undef_null(ptr %P) {
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; CHECK-LABEL: define void @store_undef_null
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; CHECK-SAME: (ptr [[P:%.*]]) {
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; CHECK-NEXT: store i32 123, ptr undef, align 4
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; CHECK-NEXT: store i32 124, ptr null, align 4294967296
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; CHECK-NEXT: ret void
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;
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store i32 123, ptr undef
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store i32 124, ptr null
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ret void
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}
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