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TheRock/compiler/amd-llvm/llvm/test/CodeGen/X86/shl-crash-on-legalize.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

41 lines
1.3 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
;RUN: llc < %s | FileCheck %s
; This test case failed on legalization of "shl" node. PR29058.
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@structMember = external dso_local local_unnamed_addr global i64, align 8
define i32 @PR29058(i8 %x, i32 %y) {
; CHECK-LABEL: PR29058:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: testb %dil, %dil
; CHECK-NEXT: movl $2147483646, %eax # imm = 0x7FFFFFFE
; CHECK-NEXT: cmovnel %esi, %eax
; CHECK-NEXT: xorl %ecx, %ecx
; CHECK-NEXT: cmpb $1, %dil
; CHECK-NEXT: sbbl %ecx, %ecx
; CHECK-NEXT: orb %sil, %cl
; CHECK-NEXT: # kill: def $cl killed $cl killed $ecx
; CHECK-NEXT: shll %cl, %eax
; CHECK-NEXT: movq %rax, structMember(%rip)
; CHECK-NEXT: # kill: def $eax killed $eax killed $rax
; CHECK-NEXT: retq
entry:
%bool_1 = icmp ne i8 %x, 0
%bool_2 = icmp eq i8 %x, 0
%0 = select i1 %bool_2, i32 2147483646, i32 %y
%or_1 = select i1 %bool_1, i32 %y, i32 -1
%shl_1 = shl i32 %0, %or_1
%conv = zext i32 %shl_1 to i64
store i64 %conv, ptr @structMember, align 8
%tmp = select i1 %bool_2, i32 2147483646, i32 %y
%lnot = icmp eq i8 %x, 0
%or_2 = select i1 %lnot, i32 -1, i32 %y
%shl_2 = shl i32 %tmp, %or_2
ret i32 %shl_2
}