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| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; 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 {
; CHECK-LABEL: func1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: subl $12, %esp
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: subl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: jno .LBB0_1
; CHECK-NEXT: # %bb.2: # %overflow
; CHECK-NEXT: movl $no, (%esp)
; CHECK-NEXT: calll printf
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: addl $12, %esp
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB0_1: # %normal
; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp)
; CHECK-NEXT: movl $ok, (%esp)
; CHECK-NEXT: calll printf
; CHECK-NEXT: movb $1, %al
; CHECK-NEXT: addl $12, %esp
; CHECK-NEXT: retl
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], [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], [4 x i8]* @no, i32 0, i32 0) ) nounwind
ret i1 false
}
define i1 @func2(i32 %v1, i32 %v2) nounwind {
; CHECK-LABEL: func2:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: subl $12, %esp
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: subl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: jae .LBB1_1
; CHECK-NEXT: # %bb.2: # %carry
; CHECK-NEXT: movl $no, (%esp)
; CHECK-NEXT: calll printf
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: addl $12, %esp
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB1_1: # %normal
; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp)
; CHECK-NEXT: movl $ok, (%esp)
; CHECK-NEXT: calll printf
; CHECK-NEXT: movb $1, %al
; CHECK-NEXT: addl $12, %esp
; CHECK-NEXT: retl
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], [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], [4 x i8]* @no, i32 0, i32 0) ) nounwind
ret i1 false
}
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 {
; CHECK-LABEL: func3:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: decl %eax
; CHECK-NEXT: seto %al
; CHECK-NEXT: retl
entry:
%t = call {i32, i1} @llvm.ssub.with.overflow.i32(i32 %x, i32 1)
%obit = extractvalue {i32, i1} %t, 1
ret i1 %obit
}
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