| Benjamin Kramer | a096276 | 2011-05-21 18:31:48 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -march=x86 | FileCheck %s |
| Bill Wendling | d350e02 | 2008-12-12 21:15:41 +0000 | [diff] [blame] | 2 | |
| 3 | @ok = internal constant [4 x i8] c"%d\0A\00" |
| 4 | @no = internal constant [4 x i8] c"no\0A\00" |
| 5 | |
| Benjamin Kramer | a096276 | 2011-05-21 18:31:48 +0000 | [diff] [blame] | 6 | define i1 @test1(i32 %v1, i32 %v2) nounwind { |
| Bill Wendling | d350e02 | 2008-12-12 21:15:41 +0000 | [diff] [blame] | 7 | entry: |
| 8 | %t = call {i32, i1} @llvm.smul.with.overflow.i32(i32 %v1, i32 %v2) |
| 9 | %sum = extractvalue {i32, i1} %t, 0 |
| 10 | %obit = extractvalue {i32, i1} %t, 1 |
| 11 | br i1 %obit, label %overflow, label %normal |
| 12 | |
| 13 | normal: |
| 14 | %t1 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @ok, i32 0, i32 0), i32 %sum ) nounwind |
| 15 | ret i1 true |
| 16 | |
| 17 | overflow: |
| 18 | %t2 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @no, i32 0, i32 0) ) nounwind |
| 19 | ret i1 false |
| Benjamin Kramer | a096276 | 2011-05-21 18:31:48 +0000 | [diff] [blame] | 20 | ; CHECK: test1: |
| 21 | ; CHECK: imull |
| 22 | ; CHECK-NEXT: jo |
| 23 | } |
| 24 | |
| 25 | define i1 @test2(i32 %v1, i32 %v2) nounwind { |
| 26 | entry: |
| 27 | %t = call {i32, i1} @llvm.smul.with.overflow.i32(i32 %v1, i32 %v2) |
| 28 | %sum = extractvalue {i32, i1} %t, 0 |
| 29 | %obit = extractvalue {i32, i1} %t, 1 |
| 30 | br i1 %obit, label %overflow, label %normal |
| 31 | |
| 32 | overflow: |
| 33 | %t2 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @no, i32 0, i32 0) ) nounwind |
| 34 | ret i1 false |
| 35 | |
| 36 | normal: |
| 37 | %t1 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @ok, i32 0, i32 0), i32 %sum ) nounwind |
| 38 | ret i1 true |
| 39 | ; CHECK: test2: |
| 40 | ; CHECK: imull |
| 41 | ; CHECK-NEXT: jno |
| Bill Wendling | d350e02 | 2008-12-12 21:15:41 +0000 | [diff] [blame] | 42 | } |
| 43 | |
| 44 | declare i32 @printf(i8*, ...) nounwind |
| 45 | declare {i32, i1} @llvm.smul.with.overflow.i32(i32, i32) |
| Benjamin Kramer | a096276 | 2011-05-21 18:31:48 +0000 | [diff] [blame] | 46 | |
| 47 | define i32 @test3(i32 %a, i32 %b) nounwind readnone { |
| 48 | entry: |
| 49 | %tmp0 = add i32 %b, %a |
| 50 | %tmp1 = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %tmp0, i32 2) |
| 51 | %tmp2 = extractvalue { i32, i1 } %tmp1, 0 |
| 52 | ret i32 %tmp2 |
| 53 | ; CHECK: test3: |
| 54 | ; CHECK: addl |
| 55 | ; CHECK-NEXT: addl |
| 56 | ; CHECK-NEXT: ret |
| 57 | } |
| 58 | |
| 59 | define i32 @test4(i32 %a, i32 %b) nounwind readnone { |
| 60 | entry: |
| 61 | %tmp0 = add i32 %b, %a |
| 62 | %tmp1 = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %tmp0, i32 4) |
| 63 | %tmp2 = extractvalue { i32, i1 } %tmp1, 0 |
| 64 | ret i32 %tmp2 |
| 65 | ; CHECK: test4: |
| 66 | ; CHECK: addl |
| 67 | ; CHECK: mull |
| 68 | ; CHECK-NEXT: ret |
| 69 | } |