mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 16:33:37 +01:00
60 lines
1.6 KiB
LLVM
60 lines
1.6 KiB
LLVM
; RUN: llc < %s -mtriple=i686-linux | FileCheck %s
|
|
|
|
@ok = internal constant [4 x i8] c"%d\0A\00"
|
|
@no = internal constant [4 x i8] c"no\0A\00"
|
|
|
|
define i1 @func1(i32 %v1, i32 %v2) nounwind {
|
|
entry:
|
|
%t = call {i32, i1} @llvm.ssub.with.overflow.i32(i32 %v1, i32 %v2)
|
|
%sum = extractvalue {i32, i1} %t, 0
|
|
%obit = extractvalue {i32, i1} %t, 1
|
|
br i1 %obit, label %overflow, label %normal
|
|
|
|
normal:
|
|
%t1 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @ok, i32 0, i32 0), i32 %sum ) nounwind
|
|
ret i1 true
|
|
|
|
overflow:
|
|
%t2 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @no, i32 0, i32 0) ) nounwind
|
|
ret i1 false
|
|
|
|
; CHECK: func1:
|
|
; CHECK: subl 20(%esp)
|
|
; CHECK-NEXT: jo
|
|
}
|
|
|
|
define i1 @func2(i32 %v1, i32 %v2) nounwind {
|
|
entry:
|
|
%t = call {i32, i1} @llvm.usub.with.overflow.i32(i32 %v1, i32 %v2)
|
|
%sum = extractvalue {i32, i1} %t, 0
|
|
%obit = extractvalue {i32, i1} %t, 1
|
|
br i1 %obit, label %carry, label %normal
|
|
|
|
normal:
|
|
%t1 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @ok, i32 0, i32 0), i32 %sum ) nounwind
|
|
ret i1 true
|
|
|
|
carry:
|
|
%t2 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @no, i32 0, i32 0) ) nounwind
|
|
ret i1 false
|
|
|
|
; CHECK: func2:
|
|
; CHECK: subl 20(%esp)
|
|
; CHECK-NEXT: jb
|
|
}
|
|
|
|
declare i32 @printf(i8*, ...) nounwind
|
|
declare {i32, i1} @llvm.ssub.with.overflow.i32(i32, i32)
|
|
declare {i32, i1} @llvm.usub.with.overflow.i32(i32, i32)
|
|
|
|
define i1 @func3(i32 %x) nounwind {
|
|
entry:
|
|
%t = call {i32, i1} @llvm.ssub.with.overflow.i32(i32 %x, i32 1)
|
|
%obit = extractvalue {i32, i1} %t, 1
|
|
ret i1 %obit
|
|
|
|
; CHECK: func3:
|
|
; CHECK: decl
|
|
; CHECK-NEXT: seto
|
|
}
|