fast-isel-select-cmp.ll
1.07 KB
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; RUN: llc < %s -O0 -mtriple=x86_64-apple-darwin10 | FileCheck %s
; Test if we do not fold the cmp into select if the instructions are in
; different basic blocks.
define i32 @select_cmp_cmov_i32(i32 %a, i32 %b) {
; CHECK-LABEL: select_cmp_cmov_i32:
; CHECK-LABEL: continue
; CHECK-NOT: cmp{{[^_]}}
%1 = icmp ult i32 %a, %b
br i1 %1, label %continue, label %exit
continue:
%2 = select i1 %1, i32 %a, i32 %b
ret i32 %2
exit:
ret i32 -1
}
define float @select_fcmp_oeq_f32(float %a, float %b, float %c, float %d) {
; CHECK-LABEL: select_fcmp_oeq_f32:
; CHECK-LABEL: continue
; CHECK-NOT: cmp{{[^_]}}
%1 = fcmp oeq float %a, %b
br i1 %1, label %continue, label %exit
continue:
%2 = select i1 %1, float %c, float %d
ret float %2
exit:
ret float -1.0
}
define float @select_fcmp_one_f32(float %a, float %b, float %c, float %d) {
; CHECK-LABEL: select_fcmp_one_f32:
; CHECK-LABEL: continue
; CHECK-NOT: ucomi
%1 = fcmp one float %a, %b
br i1 %1, label %continue, label %exit
continue:
%2 = select i1 %1, float %c, float %d
ret float %2
exit:
ret float -1.0
}