--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/Transforms/InstCombine/minnum.ll	Wed Feb 18 14:55:36 2015 +0900
@@ -0,0 +1,244 @@
+; RUN: opt -S -instcombine < %s | FileCheck %s
+
+declare float @llvm.minnum.f32(float, float) #0
+declare float @llvm.minnum.v2f32(<2 x float>, <2 x float>) #0
+declare <4 x float> @llvm.minnum.v4f32(<4 x float>, <4 x float>) #0
+
+declare double @llvm.minnum.f64(double, double) #0
+declare <2 x double> @llvm.minnum.v2f64(<2 x double>, <2 x double>) #0
+
+declare float @llvm.maxnum.f32(float, float) #0
+
+; CHECK-LABEL: @constant_fold_minnum_f32
+; CHECK-NEXT: ret float 1.000000e+00
+define float @constant_fold_minnum_f32() #0 {
+  %x = call float @llvm.minnum.f32(float 1.0, float 2.0) #0
+  ret float %x
+}
+
+; CHECK-LABEL: @constant_fold_minnum_f32_inv
+; CHECK-NEXT: ret float 1.000000e+00
+define float @constant_fold_minnum_f32_inv() #0 {
+  %x = call float @llvm.minnum.f32(float 2.0, float 1.0) #0
+  ret float %x
+}
+
+; CHECK-LABEL: @constant_fold_minnum_f32_nan0
+; CHECK-NEXT: ret float 2.000000e+00
+define float @constant_fold_minnum_f32_nan0() #0 {
+  %x = call float @llvm.minnum.f32(float 0x7FF8000000000000, float 2.0) #0
+  ret float %x
+}
+
+; CHECK-LABEL: @constant_fold_minnum_f32_nan1
+; CHECK-NEXT: ret float 2.000000e+00
+define float @constant_fold_minnum_f32_nan1() #0 {
+  %x = call float @llvm.minnum.f32(float 2.0, float 0x7FF8000000000000) #0
+  ret float %x
+}
+
+; CHECK-LABEL: @constant_fold_minnum_f32_nan_nan
+; CHECK-NEXT: ret float 0x7FF8000000000000
+define float @constant_fold_minnum_f32_nan_nan() #0 {
+  %x = call float @llvm.minnum.f32(float 0x7FF8000000000000, float 0x7FF8000000000000) #0
+  ret float %x
+}
+
+; CHECK-LABEL: @constant_fold_minnum_f32_p0_p0
+; CHECK-NEXT: ret float 0.000000e+00
+define float @constant_fold_minnum_f32_p0_p0() #0 {
+  %x = call float @llvm.minnum.f32(float 0.0, float 0.0) #0
+  ret float %x
+}
+
+; CHECK-LABEL: @constant_fold_minnum_f32_p0_n0
+; CHECK-NEXT: ret float 0.000000e+00
+define float @constant_fold_minnum_f32_p0_n0() #0 {
+  %x = call float @llvm.minnum.f32(float 0.0, float -0.0) #0
+  ret float %x
+}
+
+; CHECK-LABEL: @constant_fold_minnum_f32_n0_p0
+; CHECK-NEXT: ret float -0.000000e+00
+define float @constant_fold_minnum_f32_n0_p0() #0 {
+  %x = call float @llvm.minnum.f32(float -0.0, float 0.0) #0
+  ret float %x
+}
+
+; CHECK-LABEL: @constant_fold_minnum_f32_n0_n0
+; CHECK-NEXT: ret float -0.000000e+00
+define float @constant_fold_minnum_f32_n0_n0() #0 {
+  %x = call float @llvm.minnum.f32(float -0.0, float -0.0) #0
+  ret float %x
+}
+
+; CHECK-LABEL: @constant_fold_minnum_v4f32
+; CHECK-NEXT: ret <4 x float> <float 1.000000e+00, float 2.000000e+00, float 3.000000e+00, float 5.000000e+00>
+define <4 x float> @constant_fold_minnum_v4f32() #0 {
+  %x = call <4 x float> @llvm.minnum.v4f32(<4 x float> <float 1.0, float 8.0, float 3.0, float 9.0>, <4 x float> <float 2.0, float 2.0, float 10.0, float 5.0>)
+  ret <4 x float> %x
+}
+
+; CHECK-LABEL: @constant_fold_minnum_f64
+; CHECK-NEXT: ret double 1.000000e+00
+define double @constant_fold_minnum_f64() #0 {
+  %x = call double @llvm.minnum.f64(double 1.0, double 2.0) #0
+  ret double %x
+}
+
+; CHECK-LABEL: @constant_fold_minnum_f64_nan0
+; CHECK-NEXT: ret double 2.000000e+00
+define double @constant_fold_minnum_f64_nan0() #0 {
+  %x = call double @llvm.minnum.f64(double 0x7FF8000000000000, double 2.0) #0
+  ret double %x
+}
+
+; CHECK-LABEL: @constant_fold_minnum_f64_nan1
+; CHECK-NEXT: ret double 2.000000e+00
+define double @constant_fold_minnum_f64_nan1() #0 {
+  %x = call double @llvm.minnum.f64(double 2.0, double 0x7FF8000000000000) #0
+  ret double %x
+}
+
+; CHECK-LABEL: @constant_fold_minnum_f64_nan_nan
+; CHECK-NEXT: ret double 0x7FF8000000000000
+define double @constant_fold_minnum_f64_nan_nan() #0 {
+  %x = call double @llvm.minnum.f64(double 0x7FF8000000000000, double 0x7FF8000000000000) #0
+  ret double %x
+}
+
+; CHECK-LABEL: @canonicalize_constant_minnum_f32
+; CHECK: call float @llvm.minnum.f32(float %x, float 1.000000e+00)
+define float @canonicalize_constant_minnum_f32(float %x) #0 {
+  %y = call float @llvm.minnum.f32(float 1.0, float %x) #0
+  ret float %y
+}
+
+; CHECK-LABEL: @noop_minnum_f32
+; CHECK-NEXT: ret float %x
+define float @noop_minnum_f32(float %x) #0 {
+  %y = call float @llvm.minnum.f32(float %x, float %x) #0
+  ret float %y
+}
+
+; CHECK-LABEL: @minnum_f32_nan_val
+; CHECK-NEXT: ret float %x
+define float @minnum_f32_nan_val(float %x) #0 {
+  %y = call float @llvm.minnum.f32(float 0x7FF8000000000000, float %x) #0
+  ret float %y
+}
+
+; CHECK-LABEL: @minnum_f32_val_nan
+; CHECK-NEXT: ret float %x
+define float @minnum_f32_val_nan(float %x) #0 {
+  %y = call float @llvm.minnum.f32(float %x, float 0x7FF8000000000000) #0
+  ret float %y
+}
+
+; CHECK-LABEL: @fold_minnum_f32_undef_undef
+; CHECK-NEXT: ret float undef
+define float @fold_minnum_f32_undef_undef(float %x) nounwind {
+  %val = call float @llvm.minnum.f32(float undef, float undef) #0
+  ret float %val
+}
+
+; CHECK-LABEL: @fold_minnum_f32_val_undef
+; CHECK-NEXT: ret float %x
+define float @fold_minnum_f32_val_undef(float %x) nounwind {
+  %val = call float @llvm.minnum.f32(float %x, float undef) #0
+  ret float %val
+}
+
+; CHECK-LABEL: @fold_minnum_f32_undef_val
+; CHECK-NEXT: ret float %x
+define float @fold_minnum_f32_undef_val(float %x) nounwind {
+  %val = call float @llvm.minnum.f32(float undef, float %x) #0
+  ret float %val
+}
+
+; CHECK-LABEL: @minnum_x_minnum_x_y
+; CHECK-NEXT: call float @llvm.minnum.f32(float %x, float %y)
+; CHECK-NEXT: ret float
+define float @minnum_x_minnum_x_y(float %x, float %y) #0 {
+  %a = call float @llvm.minnum.f32(float %x, float %y) #0
+  %b = call float @llvm.minnum.f32(float %x, float %a) #0
+  ret float %b
+}
+
+; CHECK-LABEL: @minnum_y_minnum_x_y
+; CHECK-NEXT: call float @llvm.minnum.f32(float %x, float %y)
+; CHECK-NEXT: ret float
+define float @minnum_y_minnum_x_y(float %x, float %y) #0 {
+  %a = call float @llvm.minnum.f32(float %x, float %y) #0
+  %b = call float @llvm.minnum.f32(float %y, float %a) #0
+  ret float %b
+}
+
+; CHECK-LABEL: @minnum_z_minnum_x_y
+; CHECK-NEXT: call float @llvm.minnum.f32(float %x, float %y)
+; CHECK-NEXT: call float @llvm.minnum.f32(float %z, float %a)
+; CHECK-NEXT: ret float
+define float @minnum_z_minnum_x_y(float %x, float %y, float %z) #0 {
+  %a = call float @llvm.minnum.f32(float %x, float %y) #0
+  %b = call float @llvm.minnum.f32(float %z, float %a) #0
+  ret float %b
+}
+
+; CHECK-LABEL: @minnum_minnum_x_y_z
+; CHECK-NEXT: call float @llvm.minnum.f32(float %x, float %y)
+; CHECK-NEXT: call float @llvm.minnum.f32(float %a, float %z)
+; CHECK-NEXT: ret float
+define float @minnum_minnum_x_y_z(float %x, float %y, float %z) #0 {
+  %a = call float @llvm.minnum.f32(float %x, float %y) #0
+  %b = call float @llvm.minnum.f32(float %a, float %z) #0
+  ret float %b
+}
+
+; CHECK-LABEL: @minnum4
+; CHECK-NEXT: call float @llvm.minnum.f32(float %x, float %y)
+; CHECK-NEXT: call float @llvm.minnum.f32(float %z, float %w)
+; CHECK-NEXT: call float @llvm.minnum.f32(float %a, float %b)
+; CHECK-NEXT: ret float
+define float @minnum4(float %x, float %y, float %z, float %w) #0 {
+  %a = call float @llvm.minnum.f32(float %x, float %y) #0
+  %b = call float @llvm.minnum.f32(float %z, float %w) #0
+  %c = call float @llvm.minnum.f32(float %a, float %b) #0
+  ret float %c
+}
+
+; CHECK-LABEL: @minnum_x_maxnum_x_y
+; CHECK-NEXT: call float @llvm.maxnum.f32
+; CHECK-NEXT: call float @llvm.minnum.f32
+; CHECK-NEXT: ret float
+define float @minnum_x_maxnum_x_y(float %x, float %y) #0 {
+  %a = call float @llvm.maxnum.f32(float %x, float %y) #0
+  %b = call float @llvm.minnum.f32(float %x, float %a) #0
+  ret float %b
+}
+
+; CHECK-LABEL: @maxnum_x_minnum_x_y
+; CHECK-NEXT: call float @llvm.minnum.f32
+; CHECK-NEXT: call float @llvm.maxnum.f32
+; CHECK-NEXT: ret float
+define float @maxnum_x_minnum_x_y(float %x, float %y) #0 {
+  %a = call float @llvm.minnum.f32(float %x, float %y) #0
+  %b = call float @llvm.maxnum.f32(float %x, float %a) #0
+  ret float %b
+}
+
+; CHECK-LABEL: @fold_minnum_f32_inf_val
+; CHECK-NEXT: call float @llvm.minnum.f32(float %x, float 0x7FF0000000000000)
+; CHECK-NEXT: ret float
+define float @fold_minnum_f32_inf_val(float %x) nounwind {
+  %val = call float @llvm.minnum.f32(float 0x7FF0000000000000, float %x) #0
+  ret float %val
+}
+
+; CHECK-LABEL: @fold_minnum_f32_minf_val
+; CHECK-NEXT: ret float 0xFFF0000000000000
+define float @fold_minnum_f32_minf_val(float %x) nounwind {
+  %val = call float @llvm.minnum.f32(float 0xFFF0000000000000, float %x) #0
+  ret float %val
+}
+
+attributes #0 = { nounwind readnone }