mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-01 15:11:24 +00:00
36a0947820
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81290 91177308-0d34-0410-b5e6-96231b3b80d8
52 lines
1.1 KiB
LLVM
52 lines
1.1 KiB
LLVM
; 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: llc < %s -march=x86 | grep {\\(and\\)\\|\\(test.*\\\$1\\)} | \
|
|
; RUN: count 5
|
|
|
|
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 @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
|
|
}
|
|
|