mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 04:30:12 +00:00
75311b7b4d
double test(double a, double b, double c, double d) { return a<b ? c : d; }
before:
_test:
ucomisd %xmm0, %xmm1
ja LBB0_2
movaps %xmm3, %xmm2
LBB0_2:
movaps %xmm2, %xmm0
after:
_test:
cmpltsd %xmm1, %xmm0
andpd %xmm0, %xmm2
andnpd %xmm3, %xmm0
orpd %xmm2, %xmm0
Small speedup on Benchmarks/SmallPT
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187706 91177308-0d34-0410-b5e6-96231b3b80d8
127 lines
2.2 KiB
LLVM
127 lines
2.2 KiB
LLVM
; RUN: llc < %s -march=x86-64 | FileCheck %s
|
|
|
|
; Convert oeq and une to ole/oge/ule/uge when comparing with infinity
|
|
; and negative infinity, because those are more efficient on x86.
|
|
|
|
declare void @f() nounwind
|
|
|
|
; CHECK-LABEL: oeq_inff:
|
|
; CHECK: ucomiss
|
|
; CHECK: jb
|
|
define void @oeq_inff(float %x) nounwind {
|
|
%t0 = fcmp oeq float %x, 0x7FF0000000000000
|
|
br i1 %t0, label %true, label %false
|
|
|
|
true:
|
|
call void @f() nounwind
|
|
br label %false
|
|
|
|
false:
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: oeq_inf:
|
|
; CHECK: ucomisd
|
|
; CHECK: jb
|
|
define void @oeq_inf(double %x) nounwind {
|
|
%t0 = fcmp oeq double %x, 0x7FF0000000000000
|
|
br i1 %t0, label %true, label %false
|
|
|
|
true:
|
|
call void @f() nounwind
|
|
br label %false
|
|
|
|
false:
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: une_inff:
|
|
; CHECK: ucomiss
|
|
; CHECK: jae
|
|
define void @une_inff(float %x) nounwind {
|
|
%t0 = fcmp une float %x, 0x7FF0000000000000
|
|
br i1 %t0, label %true, label %false
|
|
|
|
true:
|
|
call void @f() nounwind
|
|
br label %false
|
|
|
|
false:
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: une_inf:
|
|
; CHECK: ucomisd
|
|
; CHECK: jae
|
|
define void @une_inf(double %x) nounwind {
|
|
%t0 = fcmp une double %x, 0x7FF0000000000000
|
|
br i1 %t0, label %true, label %false
|
|
|
|
true:
|
|
call void @f() nounwind
|
|
br label %false
|
|
|
|
false:
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: oeq_neg_inff:
|
|
; CHECK: ucomiss
|
|
; CHECK: jb
|
|
define void @oeq_neg_inff(float %x) nounwind {
|
|
%t0 = fcmp oeq float %x, 0xFFF0000000000000
|
|
br i1 %t0, label %true, label %false
|
|
|
|
true:
|
|
call void @f() nounwind
|
|
br label %false
|
|
|
|
false:
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: oeq_neg_inf:
|
|
; CHECK: ucomisd
|
|
; CHECK: jb
|
|
define void @oeq_neg_inf(double %x) nounwind {
|
|
%t0 = fcmp oeq double %x, 0xFFF0000000000000
|
|
br i1 %t0, label %true, label %false
|
|
|
|
true:
|
|
call void @f() nounwind
|
|
br label %false
|
|
|
|
false:
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: une_neg_inff:
|
|
; CHECK: ucomiss
|
|
; CHECK: jae
|
|
define void @une_neg_inff(float %x) nounwind {
|
|
%t0 = fcmp une float %x, 0xFFF0000000000000
|
|
br i1 %t0, label %true, label %false
|
|
|
|
true:
|
|
call void @f() nounwind
|
|
br label %false
|
|
|
|
false:
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: une_neg_inf:
|
|
; CHECK: ucomisd
|
|
; CHECK: jae
|
|
define void @une_neg_inf(double %x) nounwind {
|
|
%t0 = fcmp une double %x, 0xFFF0000000000000
|
|
br i1 %t0, label %true, label %false
|
|
|
|
true:
|
|
call void @f() nounwind
|
|
br label %false
|
|
|
|
false:
|
|
ret void
|
|
}
|