| ; 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@PLT |
| ; 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@PLT |
| ; 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@PLT |
| ; 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@PLT |
| ; 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 |
| |
| } |