fe4dbbb467
While this is normally non-canonical IR, this pattern can appear during SDAG lowering if the add is actually a getelementptr, as illustrated in `@test_ptr`. This pattern comes up when doing provenance-aware high-bit pointer tagging. Proof: https://alive2.llvm.org/ce/z/DLoEcs Fixes https://github.com/llvm/llvm-project/issues/62093. Differential Revision: https://reviews.llvm.org/D148341
72 lines
1.9 KiB
LLVM
72 lines
1.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
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; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
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define i32 @test_scalar(i32 %x) {
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; CHECK-LABEL: test_scalar:
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; CHECK: # %bb.0:
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; CHECK-NEXT: # kill: def $edi killed $edi def $rdi
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; CHECK-NEXT: leal (,%rdi,4), %eax
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; CHECK-NEXT: retq
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%mul = mul i32 %x, 3
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%add = add i32 %mul, %x
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ret i32 %add
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}
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define i32 @test_scalar_commuted(i32 %x) {
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; CHECK-LABEL: test_scalar_commuted:
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; CHECK: # %bb.0:
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; CHECK-NEXT: # kill: def $edi killed $edi def $rdi
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; CHECK-NEXT: leal (,%rdi,4), %eax
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; CHECK-NEXT: retq
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%mul = mul i32 %x, 3
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%add = add i32 %x, %mul
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ret i32 %add
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}
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define <4 x i32> @test_vector(<4 x i32> %x) {
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; CHECK-LABEL: test_vector:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pslld $2, %xmm0
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; CHECK-NEXT: retq
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%mul = mul <4 x i32> %x, <i32 3, i32 3, i32 3, i32 3>
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%add = add <4 x i32> %mul, %x
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ret <4 x i32> %add
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}
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define ptr @test_ptr(ptr %p) {
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; CHECK-LABEL: test_ptr:
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; CHECK: # %bb.0:
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; CHECK-NEXT: leaq (,%rdi,4), %rax
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; CHECK-NEXT: retq
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%addr = ptrtoint ptr %p to i64
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%mul = mul i64 %addr, 3
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%res = getelementptr i8, ptr %p, i64 %mul
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ret ptr %res
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}
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define i32 @test_extra_use(i32 %x, ptr %p) {
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; CHECK-LABEL: test_extra_use:
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; CHECK: # %bb.0:
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; CHECK-NEXT: # kill: def $edi killed $edi def $rdi
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; CHECK-NEXT: leal (%rdi,%rdi,2), %eax
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; CHECK-NEXT: movl %eax, (%rsi)
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; CHECK-NEXT: addl %edi, %eax
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; CHECK-NEXT: retq
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%mul = mul i32 %x, 3
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store i32 %mul, ptr %p
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%add = add i32 %mul, %x
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ret i32 %add
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}
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define i32 @test_different_operand(i32 %x, i32 %y) {
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; CHECK-LABEL: test_different_operand:
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; CHECK: # %bb.0:
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; CHECK-NEXT: # kill: def $edi killed $edi def $rdi
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; CHECK-NEXT: leal (%rdi,%rdi,2), %eax
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; CHECK-NEXT: addl %esi, %eax
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; CHECK-NEXT: retq
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%mul = mul i32 %x, 3
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%add = add i32 %mul, %y
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ret i32 %add
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}
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