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llvm-mirror/test/CodeGen/ARM/neon_minmax.ll
Renato Golin 0854fd9bef Avoid NEON SP-FP unless unsafe-math or Darwin
NEON is not IEEE 754 compliant, so we should avoid lowering single-precision
floating point operations with NEON unless unsafe-math is turned on. The
equivalent VFP instructions are IEEE 754 compliant, but in some cores they're
much slower, so some archs/OSs might still request it to be on by default,
such as Swift and Darwin.

llvm-svn: 177651
2013-03-21 18:47:47 +00:00

82 lines
1.9 KiB
LLVM

; RUN: llc < %s -march=arm -mcpu=swift | FileCheck %s
define float @fmin_ole(float %x) nounwind {
;CHECK: fmin_ole:
;CHECK: vmin.f32
%cond = fcmp ole float 1.0, %x
%min1 = select i1 %cond, float 1.0, float %x
ret float %min1
}
define float @fmin_ole_zero(float %x) nounwind {
;CHECK: fmin_ole_zero:
;CHECK-NOT: vmin.f32
%cond = fcmp ole float 0.0, %x
%min1 = select i1 %cond, float 0.0, float %x
ret float %min1
}
define float @fmin_ult(float %x) nounwind {
;CHECK: fmin_ult:
;CHECK: vmin.f32
%cond = fcmp ult float %x, 1.0
%min1 = select i1 %cond, float %x, float 1.0
ret float %min1
}
define float @fmax_ogt(float %x) nounwind {
;CHECK: fmax_ogt:
;CHECK: vmax.f32
%cond = fcmp ogt float 1.0, %x
%max1 = select i1 %cond, float 1.0, float %x
ret float %max1
}
define float @fmax_uge(float %x) nounwind {
;CHECK: fmax_uge:
;CHECK: vmax.f32
%cond = fcmp uge float %x, 1.0
%max1 = select i1 %cond, float %x, float 1.0
ret float %max1
}
define float @fmax_uge_zero(float %x) nounwind {
;CHECK: fmax_uge_zero:
;CHECK-NOT: vmax.f32
%cond = fcmp uge float %x, 0.0
%max1 = select i1 %cond, float %x, float 0.0
ret float %max1
}
define float @fmax_olt_reverse(float %x) nounwind {
;CHECK: fmax_olt_reverse:
;CHECK: vmax.f32
%cond = fcmp olt float %x, 1.0
%max1 = select i1 %cond, float 1.0, float %x
ret float %max1
}
define float @fmax_ule_reverse(float %x) nounwind {
;CHECK: fmax_ule_reverse:
;CHECK: vmax.f32
%cond = fcmp ult float 1.0, %x
%max1 = select i1 %cond, float %x, float 1.0
ret float %max1
}
define float @fmin_oge_reverse(float %x) nounwind {
;CHECK: fmin_oge_reverse:
;CHECK: vmin.f32
%cond = fcmp oge float %x, 1.0
%min1 = select i1 %cond, float 1.0, float %x
ret float %min1
}
define float @fmin_ugt_reverse(float %x) nounwind {
;CHECK: fmin_ugt_reverse:
;CHECK: vmin.f32
%cond = fcmp ugt float 1.0, %x
%min1 = select i1 %cond, float %x, float 1.0
ret float %min1
}