70 lines
2.8 KiB
LLVM
70 lines
2.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -inline -instcombine %s | FileCheck %s --check-prefixes=CHECK,CHECK-INLINE
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; RUN: opt -S -instcombine %s | FileCheck %s --check-prefixes=CHECK,CHECK-NOINLINE
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define ptr @widen_align_from_allocalign_callsite() {
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; CHECK-LABEL: @widen_align_from_allocalign_callsite(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CALL:%.*]] = tail call align 64 ptr @my_aligned_alloc_2(i32 noundef 320, i32 allocalign noundef 64)
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; CHECK-NEXT: ret ptr [[CALL]]
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;
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entry:
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%call = tail call align 16 ptr @my_aligned_alloc_2(i32 noundef 320, i32 allocalign noundef 64)
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ret ptr %call
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}
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define ptr @widen_align_from_allocalign() {
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; CHECK-LABEL: @widen_align_from_allocalign(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CALL:%.*]] = tail call align 64 ptr @my_aligned_alloc(i32 noundef 320, i32 noundef 64)
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; CHECK-NEXT: ret ptr [[CALL]]
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;
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entry:
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%call = tail call align 16 ptr @my_aligned_alloc(i32 noundef 320, i32 noundef 64)
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ret ptr %call
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}
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define ptr @dont_narrow_align_from_allocalign() {
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; CHECK-LABEL: @dont_narrow_align_from_allocalign(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CALL:%.*]] = tail call align 16 ptr @my_aligned_alloc(i32 noundef 320, i32 noundef 8)
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; CHECK-NEXT: ret ptr [[CALL]]
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;
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entry:
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%call = tail call align 16 ptr @my_aligned_alloc(i32 noundef 320, i32 noundef 8)
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ret ptr %call
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}
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define ptr @my_aligned_alloc_3(i32 noundef %foo, i32 allocalign %alignment) {
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; CHECK-LABEL: @my_aligned_alloc_3(
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; CHECK-NEXT: [[CALL:%.*]] = tail call ptr @my_aligned_alloc_2(i32 noundef [[FOO:%.*]], i32 noundef [[ALIGNMENT:%.*]])
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; CHECK-NEXT: ret ptr [[CALL]]
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;
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%call = tail call ptr @my_aligned_alloc_2(i32 noundef %foo, i32 noundef %alignment)
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ret ptr %call
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}
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; -inline is able to make my_aligned_alloc_3's arguments disappear and directly
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; call my_aligned_alloc_2, but the latter has no allocalign so the alignment just
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; disappears. This is conservatively correct but undesirable because we can't
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; figure out the `align 128` on the return value once the call is directly on
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; my_aligned_alloc_2. Note that this is a simplified version of what happens
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; with _mm_malloc which calls posix_memalign.
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define ptr @allocalign_disappears() {
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; CHECK-INLINE-LABEL: @allocalign_disappears(
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; CHECK-INLINE-NEXT: [[CALL_I:%.*]] = tail call ptr @my_aligned_alloc_2(i32 noundef 42, i32 noundef 128)
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; CHECK-INLINE-NEXT: ret ptr [[CALL_I]]
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;
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; CHECK-NOINLINE-LABEL: @allocalign_disappears(
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; CHECK-NOINLINE-NEXT: [[CALL:%.*]] = tail call align 128 ptr @my_aligned_alloc_3(i32 42, i32 128)
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; CHECK-NOINLINE-NEXT: ret ptr [[CALL]]
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;
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%call = tail call ptr @my_aligned_alloc_3(i32 42, i32 128)
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ret ptr %call
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}
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declare ptr @my_aligned_alloc(i32 noundef, i32 allocalign noundef)
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declare ptr @my_aligned_alloc_2(i32 noundef, i32 noundef)
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