| ; An integer truncation to i1 should be done with an and instruction to make |
| ; sure only the LSBit survives. Test that this is the case both for a returned |
| ; value and as the operand of a branch. |
| ; RUN: llvm-as < %s | llc -march=x86 | grep {\\(and\\)\\|\\(test.*\\\$1\\)} | \ |
| ; RUN: count 6 |
| |
| define i1 @test1(i32 %X) zeroext { |
| %Y = trunc i32 %X to i1 |
| ret i1 %Y |
| } |
| |
| define i1 @test2(i32 %val, i32 %mask) { |
| entry: |
| %shifted = ashr i32 %val, %mask |
| %anded = and i32 %shifted, 1 |
| %trunced = trunc i32 %anded to i1 |
| br i1 %trunced, label %ret_true, label %ret_false |
| ret_true: |
| ret i1 true |
| ret_false: |
| ret i1 false |
| } |
| |
| define i32 @test3(i8* %ptr) { |
| %val = load i8* %ptr |
| %tmp = trunc i8 %val to i1 |
| br i1 %tmp, label %cond_true, label %cond_false |
| cond_true: |
| ret i32 21 |
| cond_false: |
| ret i32 42 |
| } |
| |
| define i32 @test4(i8* %ptr) { |
| %tmp = ptrtoint i8* %ptr to i1 |
| br i1 %tmp, label %cond_true, label %cond_false |
| cond_true: |
| ret i32 21 |
| cond_false: |
| ret i32 42 |
| } |
| |
| define i32 @test5(float %f) { |
| %tmp = fptoui float %f to i1 |
| br i1 %tmp, label %cond_true, label %cond_false |
| cond_true: |
| ret i32 21 |
| cond_false: |
| ret i32 42 |
| } |
| |
| define i32 @test6(double %d) { |
| %tmp = fptosi double %d to i1 |
| br i1 %tmp, label %cond_true, label %cond_false |
| cond_true: |
| ret i32 21 |
| cond_false: |
| ret i32 42 |
| } |
| |