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; RUN: opt < %s -passes=sccp -S | FileCheck %s
define i1 @float.1(i1 %cmp) {
; CHECK-LABEL: define i1 @float.1(i1 %cmp) {
; CHECK-LABEL: end:
; CHECK-NEXT: ret i1 true
;
entry:
br i1 %cmp, label %if.true, label %end
if.true:
br label %end
end:
%p = phi float [ 1.0, %entry ], [ 1.0, %if.true]
%c = fcmp ueq float %p, 1.0
ret i1 %c
}
define i1 @float.2(i1 %cmp) {
; CHECK-LABEL: define i1 @float.2(i1 %cmp) {
; CHECK-LABEL: end:
; CHECK-NEXT: %p = phi float [ 1.000000e+00, %entry ], [ 2.000000e+00, %if.true ]
; CHECK-NEXT: %c = fcmp ueq float %p, 1.000000e+00
; CHECK-NEXT: ret i1 %c
;
entry:
br i1 %cmp, label %if.true, label %end
if.true:
br label %end
end:
%p = phi float [ 1.0, %entry ], [ 2.0, %if.true]
%c = fcmp ueq float %p, 1.0
ret i1 %c
}
define i1 @float.3(float %f, i1 %cmp) {
; CHECK-LABEL: define i1 @float.3(float %f, i1 %cmp)
; CHECK-LABEL: end:
; CHECK-NEXT: %p = phi float [ 1.000000e+00, %entry ], [ %f, %if.true ]
; CHECK-NEXT: %c = fcmp ueq float %p, 1.000000e+00
; CHECK-NEXT: ret i1 %c
;
entry:
br i1 %cmp, label %if.true, label %end
if.true:
br label %end
end:
%p = phi float [ 1.0, %entry ], [ %f, %if.true]
%c = fcmp ueq float %p, 1.0
ret i1 %c
}
define i1 @float.4_unreachable(float %f, i1 %cmp) {
; CHECK-LABEL: define i1 @float.4_unreachable(float %f, i1 %cmp)
; CHECK-LABEL: end:
; CHECK-NEXT: ret i1 false
;
entry:
br i1 %cmp, label %if.true, label %end
if.true:
br label %end
dead:
br label %end
end:
%p = phi float [ 1.0, %entry ], [ 1.0, %if.true], [ %f, %dead ]
%c = fcmp une float %p, 1.0
ret i1 %c
}
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