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TheRock/compiler/amd-llvm/llvm/test/CodeGen/X86/pr37025.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

124 lines
2.9 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s
; PR37025
;
;#include <stdatomic.h>
;#include <stdbool.h>
;
;void func2();
;
;void func(_Atomic(unsigned long) * obj, ptr obj2)
;{
; if (atomic_fetch_sub(obj, 1) == 1 && obj2)
; func2();
;}
define void @test_dec_select(ptr nocapture %0, ptr readnone %1) {
; CHECK-LABEL: test_dec_select:
; CHECK: # %bb.0:
; CHECK-NEXT: lock decq (%rdi)
; CHECK-NEXT: sete %al
; CHECK-NEXT: testq %rsi, %rsi
; CHECK-NEXT: setne %cl
; CHECK-NEXT: andb %al, %cl
; CHECK-NEXT: cmpb $1, %cl
; CHECK-NEXT: je func2 # TAILCALL
; CHECK-NEXT: # %bb.1:
; CHECK-NEXT: retq
%3 = atomicrmw sub ptr %0, i64 1 seq_cst
%4 = icmp eq i64 %3, 1
%5 = icmp ne ptr %1, null
%6 = select i1 %4, i1 %5, i1 false
br i1 %6, label %7, label %8
7: ; preds = %2
tail call void @func2()
br label %8
8: ; preds = %7, %2
ret void
}
define void @test_dec_select_commute(ptr nocapture %0, ptr readnone %1) {
; CHECK-LABEL: test_dec_select_commute:
; CHECK: # %bb.0:
; CHECK-NEXT: lock decq (%rdi)
; CHECK-NEXT: sete %al
; CHECK-NEXT: testq %rsi, %rsi
; CHECK-NEXT: setne %cl
; CHECK-NEXT: andb %al, %cl
; CHECK-NEXT: cmpb $1, %cl
; CHECK-NEXT: je func2 # TAILCALL
; CHECK-NEXT: # %bb.1:
; CHECK-NEXT: retq
%3 = atomicrmw sub ptr %0, i64 1 seq_cst
%4 = icmp eq i64 %3, 1
%5 = icmp ne ptr %1, null
%6 = select i1 %5, i1 %4, i1 false
br i1 %6, label %7, label %8
7: ; preds = %2
tail call void @func2()
br label %8
8: ; preds = %7, %2
ret void
}
define void @test_dec_and(ptr nocapture %0, ptr readnone %1) {
; CHECK-LABEL: test_dec_and:
; CHECK: # %bb.0:
; CHECK-NEXT: lock decq (%rdi)
; CHECK-NEXT: sete %al
; CHECK-NEXT: notb %al
; CHECK-NEXT: testq %rsi, %rsi
; CHECK-NEXT: sete %cl
; CHECK-NEXT: orb %al, %cl
; CHECK-NEXT: testb $1, %cl
; CHECK-NEXT: je func2 # TAILCALL
; CHECK-NEXT: # %bb.1:
; CHECK-NEXT: retq
%3 = atomicrmw sub ptr %0, i64 1 seq_cst
%4 = icmp eq i64 %3, 1
%5 = icmp ne ptr %1, null
%6 = and i1 %5, %4
br i1 %6, label %7, label %8
7: ; preds = %2
tail call void @func2()
br label %8
8: ; preds = %7, %2
ret void
}
define void @test_dec_and_commute(ptr nocapture %0, ptr readnone %1) {
; CHECK-LABEL: test_dec_and_commute:
; CHECK: # %bb.0:
; CHECK-NEXT: lock decq (%rdi)
; CHECK-NEXT: sete %al
; CHECK-NEXT: notb %al
; CHECK-NEXT: testq %rsi, %rsi
; CHECK-NEXT: sete %cl
; CHECK-NEXT: orb %al, %cl
; CHECK-NEXT: testb $1, %cl
; CHECK-NEXT: je func2 # TAILCALL
; CHECK-NEXT: # %bb.1:
; CHECK-NEXT: retq
%3 = atomicrmw sub ptr %0, i64 1 seq_cst
%4 = icmp eq i64 %3, 1
%5 = icmp ne ptr %1, null
%6 = and i1 %4, %5
br i1 %6, label %7, label %8
7: ; preds = %2
tail call void @func2()
br label %8
8: ; preds = %7, %2
ret void
}
declare dso_local void @func2()