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TheRock/compiler/amd-llvm/llvm/test/CodeGen/X86/pr15981.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

63 lines
1.6 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-unknown-unknown | FileCheck %s --check-prefix=X86
; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=X64
@a = external dso_local global i32
@b = external dso_local global i32
@c = external dso_local global i32
define i32 @fn1(i32, i32) {
; X86-LABEL: fn1:
; X86: # %bb.0:
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: testl %eax, %eax
; X86-NEXT: je .LBB0_2
; X86-NEXT: # %bb.1:
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: .LBB0_2:
; X86-NEXT: retl
;
; X64-LABEL: fn1:
; X64: # %bb.0:
; X64-NEXT: movl %edi, %eax
; X64-NEXT: testl %esi, %esi
; X64-NEXT: cmovel %esi, %eax
; X64-NEXT: retq
%3 = icmp ne i32 %1, 0
%4 = select i1 %3, i32 %0, i32 0
ret i32 %4
}
define void @fn2() {
; X86-LABEL: fn2:
; X86: # %bb.0:
; X86-NEXT: movl b, %eax
; X86-NEXT: decl a
; X86-NEXT: jne .LBB1_2
; X86-NEXT: # %bb.1:
; X86-NEXT: xorl %eax, %eax
; X86-NEXT: .LBB1_2:
; X86-NEXT: movl %eax, c
; X86-NEXT: retl
;
; X64-LABEL: fn2:
; X64: # %bb.0:
; X64-NEXT: xorl %eax, %eax
; X64-NEXT: decl a(%rip)
; X64-NEXT: je .LBB1_2
; X64-NEXT: # %bb.1:
; X64-NEXT: movl b(%rip), %eax
; X64-NEXT: .LBB1_2:
; X64-NEXT: movl %eax, c(%rip)
; X64-NEXT: retq
%1 = load volatile i32, ptr @b, align 4
%2 = load i32, ptr @a, align 4
%3 = add nsw i32 %2, -1
store i32 %3, ptr @a, align 4
%4 = icmp ne i32 %3, 0
%5 = select i1 %4, i32 %1, i32 0
store i32 %5, ptr @c, align 4
ret void
}