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; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s
define zeroext i1 @f1(i8* %x) {
; CHECK-LABEL: f1:
; CHECK: movb (%rdi), %al
; CHECK-NEXT: ret
entry:
%0 = load i8* %x, align 1, !range !0
%tobool = trunc i8 %0 to i1
ret i1 %tobool
}
define zeroext i1 @f2(i8* %x) {
; CHECK-LABEL: f2:
; CHECK: movb (%rdi), %al
; CHECK-NEXT: ret
entry:
%0 = load i8* %x, align 1, !range !0
%tobool = icmp ne i8 %0, 0
ret i1 %tobool
}
!0 = !{i8 0, i8 2}
; check that we don't build a "trunc" from i1 to i1, which would assert.
define zeroext i1 @f3(i1 %x) {
; CHECK-LABEL: f3:
entry:
%tobool = icmp ne i1 %x, 0
ret i1 %tobool
}
; check that we don't build a trunc when other bits are needed
define zeroext i1 @f4(i32 %x) {
; CHECK-LABEL: f4:
; CHECK: and
entry:
%y = and i32 %x, 32768
%z = icmp ne i32 %y, 0
ret i1 %z
}
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