diff --git a/test/Transforms/InstCombine/win-math.ll b/test/Transforms/InstCombine/win-math.ll
index 3694779..0074cf4 100644
--- a/test/Transforms/InstCombine/win-math.ll
+++ b/test/Transforms/InstCombine/win-math.ll
@@ -1,7 +1,7 @@
-; RUN: opt -O2 -S -mtriple=i386-pc-win32 < %s | FileCheck %s -check-prefix=WIN32
-; RUN: opt -O2 -S -mtriple=x86_64-pc-win32 < %s | FileCheck %s -check-prefix=WIN64
-; RUN: opt -O2 -S -mtriple=i386-pc-mingw32 < %s | FileCheck %s -check-prefix=MINGW32
-; RUN: opt -O2 -S -mtriple=x86_64-pc-mingw32 < %s | FileCheck %s -check-prefix=MINGW64
+; RUN: opt -O2 -S -mtriple=i386-pc-win32 < %s     | FileCheck %s --check-prefixes=CHECK,WIN32
+; RUN: opt -O2 -S -mtriple=x86_64-pc-win32 < %s   | FileCheck %s --check-prefixes=CHECK,WIN64
+; RUN: opt -O2 -S -mtriple=i386-pc-mingw32 < %s   | FileCheck %s --check-prefixes=CHECK,MINGW32
+; RUN: opt -O2 -S -mtriple=x86_64-pc-mingw32 < %s | FileCheck %s --check-prefixes=CHECK,MINGW64
 
 ; x86 win32 msvcrt does not provide entry points for single-precision libm.
 ; x86-64 win32 msvcrt does (except for fabsf)
@@ -9,7 +9,7 @@
 
 declare double @acos(double %x)
 define float @float_acos(float %x) nounwind readnone {
-; WIN32-LABEL: @float_acos(
+; CHECK-LABEL: @float_acos(
 ; WIN32-NOT: float @acosf
 ; WIN32: double @acos
     %1 = fpext float %x to double
@@ -20,7 +20,7 @@
 
 declare double @asin(double %x)
 define float @float_asin(float %x) nounwind readnone {
-; WIN32-LABEL: @float_asin(
+; CHECK-LABEL: @float_asin(
 ; WIN32-NOT: float @asinf
 ; WIN32: double @asin
     %1 = fpext float %x to double
@@ -31,7 +31,7 @@
 
 declare double @atan(double %x)
 define float @float_atan(float %x) nounwind readnone {
-; WIN32-LABEL: @float_atan(
+; CHECK-LABEL: @float_atan(
 ; WIN32-NOT: float @atanf
 ; WIN32: double @atan
     %1 = fpext float %x to double
@@ -42,7 +42,7 @@
 
 declare double @atan2(double %x, double %y)
 define float @float_atan2(float %x, float %y) nounwind readnone {
-; WIN32-LABEL: @float_atan2(
+; CHECK-LABEL: @float_atan2(
 ; WIN32-NOT: float @atan2f
 ; WIN32: double @atan2
     %1 = fpext float %x to double
@@ -54,16 +54,13 @@
 
 declare double @ceil(double %x)
 define float @float_ceil(float %x) nounwind readnone {
-; WIN32-LABEL: @float_ceil(
+; CHECK-LABEL: @float_ceil(
 ; WIN32-NOT: float @ceilf
 ; WIN32: float @llvm.ceil.f32
-; WIN64-LABEL: @float_ceil(
 ; WIN64: float @llvm.ceil.f32
 ; WIN64-NOT: double @ceil
-; MINGW32-LABEL: @float_ceil(
 ; MINGW32: float @llvm.ceil.f32
 ; MINGW32-NOT: double @ceil
-; MINGW64-LABEL: @float_ceil(
 ; MINGW64: float @llvm.ceil.f32
 ; MINGW64-NOT: double @ceil
     %1 = fpext float %x to double
@@ -74,7 +71,7 @@
 
 declare double @_copysign(double %x)
 define float @float_copysign(float %x) nounwind readnone {
-; WIN32-LABEL: @float_copysign(
+; CHECK-LABEL: @float_copysign(
 ; WIN32-NOT: float @copysignf
 ; WIN32-NOT: float @_copysignf
 ; WIN32: double @_copysign
@@ -86,7 +83,7 @@
 
 declare double @cos(double %x)
 define float @float_cos(float %x) nounwind readnone {
-; WIN32-LABEL: @float_cos(
+; CHECK-LABEL: @float_cos(
 ; WIN32-NOT: float @cosf
 ; WIN32: double @cos
     %1 = fpext float %x to double
@@ -97,7 +94,7 @@
 
 declare double @cosh(double %x)
 define float @float_cosh(float %x) nounwind readnone {
-; WIN32-LABEL: @float_cosh(
+; CHECK-LABEL: @float_cosh(
 ; WIN32-NOT: float @coshf
 ; WIN32: double @cosh
     %1 = fpext float %x to double
@@ -108,7 +105,7 @@
 
 declare double @exp(double %x, double %y)
 define float @float_exp(float %x, float %y) nounwind readnone {
-; WIN32-LABEL: @float_exp(
+; CHECK-LABEL: @float_exp(
 ; WIN32-NOT: float @expf
 ; WIN32: double @exp
     %1 = fpext float %x to double
@@ -120,10 +117,9 @@
 
 declare double @fabs(double %x, double %y)
 define float @float_fabs(float %x, float %y) nounwind readnone {
-; WIN32-LABEL: @float_fabs(
+; CHECK-LABEL: @float_fabs(
 ; WIN32-NOT: float @fabsf
 ; WIN32: double @fabs
-; WIN64-LABEL: @float_fabs(
 ; WIN64-NOT: float @fabsf
 ; WIN64: double @fabs
     %1 = fpext float %x to double
@@ -135,16 +131,13 @@
 
 declare double @floor(double %x)
 define float @float_floor(float %x) nounwind readnone {
-; WIN32-LABEL: @float_floor(
+; CHECK-LABEL: @float_floor(
 ; WIN32-NOT: float @floorf
 ; WIN32: float @llvm.floor.f32
-; WIN64-LABEL: @float_floor(
 ; WIN64: float @llvm.floor.f32
 ; WIN64-NOT: double @floor
-; MINGW32-LABEL: @float_floor(
 ; MINGW32: float @llvm.floor.f32
 ; MINGW32-NOT: double @floor
-; MINGW64-LABEL: @float_floor(
 ; MINGW64: float @llvm.floor.f32
 ; MINGW64-NOT: double @floor
     %1 = fpext float %x to double
@@ -167,7 +160,7 @@
 
 declare double @log(double %x)
 define float @float_log(float %x) nounwind readnone {
-; WIN32-LABEL: @float_log(
+; CHECK-LABEL: @float_log(
 ; WIN32-NOT: float @logf
 ; WIN32: double @log
     %1 = fpext float %x to double
@@ -178,7 +171,7 @@
 
 declare double @pow(double %x, double %y)
 define float @float_pow(float %x, float %y) nounwind readnone {
-; WIN32-LABEL: @float_pow(
+; CHECK-LABEL: @float_pow(
 ; WIN32-NOT: float @powf
 ; WIN32: double @pow
     %1 = fpext float %x to double
@@ -190,7 +183,7 @@
 
 declare double @sin(double %x)
 define float @float_sin(float %x) nounwind readnone {
-; WIN32-LABEL: @float_sin(
+; CHECK-LABEL: @float_sin(
 ; WIN32-NOT: float @sinf
 ; WIN32: double @sin
     %1 = fpext float %x to double
@@ -201,7 +194,7 @@
 
 declare double @sinh(double %x)
 define float @float_sinh(float %x) nounwind readnone {
-; WIN32-LABEL: @float_sinh(
+; CHECK-LABEL: @float_sinh(
 ; WIN32-NOT: float @sinhf
 ; WIN32: double @sinh
     %1 = fpext float %x to double
@@ -212,16 +205,13 @@
 
 declare double @sqrt(double %x)
 define float @float_sqrt(float %x) nounwind readnone {
-; WIN32-LABEL: @float_sqrt(
+; CHECK-LABEL: @float_sqrt(
 ; WIN32-NOT: float @sqrtf
 ; WIN32: double @sqrt
-; WIN64-LABEL: @float_sqrt(
 ; WIN64: float @sqrtf
 ; WIN64-NOT: double @sqrt
-; MINGW32-LABEL: @float_sqrt(
 ; MINGW32: float @sqrtf
 ; MINGW32-NOT: double @sqrt
-; MINGW64-LABEL: @float_sqrt(
 ; MINGW64: float @sqrtf
 ; MINGW64-NOT: double @sqrt
     %1 = fpext float %x to double
@@ -232,7 +222,7 @@
 
 declare double @tan(double %x)
 define float @float_tan(float %x) nounwind readnone {
-; WIN32-LABEL: @float_tan(
+; CHECK-LABEL: @float_tan(
 ; WIN32-NOT: float @tanf
 ; WIN32: double @tan
     %1 = fpext float %x to double
@@ -243,7 +233,7 @@
 
 declare double @tanh(double %x)
 define float @float_tanh(float %x) nounwind readnone {
-; WIN32-LABEL: @float_tanh(
+; CHECK-LABEL: @float_tanh(
 ; WIN32-NOT: float @tanhf
 ; WIN32: double @tanh
     %1 = fpext float %x to double
@@ -255,16 +245,13 @@
 ; win32 does not have round; mingw32 does
 declare double @round(double %x)
 define float @float_round(float %x) nounwind readnone {
-; WIN32-LABEL: @float_round(
+; CHECK-LABEL: @float_round(
 ; WIN32-NOT: float @roundf
 ; WIN32: double @round
-; WIN64-LABEL: @float_round(
 ; WIN64-NOT: float @roundf
 ; WIN64: double @round
-; MINGW32-LABEL: @float_round(
 ; MINGW32: float @llvm.round.f32
 ; MINGW32-NOT: double @round
-; MINGW64-LABEL: @float_round(
 ; MINGW64: float @llvm.round.f32
 ; MINGW64-NOT: double @round
     %1 = fpext float %x to double
@@ -278,20 +265,15 @@
 ; win32 lacks sqrtf&fabsf, win64 lacks fabsf, but
 ; calls to the intrinsics can be emitted instead.
 define float @float_powsqrt(float %x) nounwind readnone {
-; WIN32-LABEL: @float_powsqrt(
+; CHECK-LABEL: @float_powsqrt(
 ; WIN32-NOT: float @sqrtf
 ; WIN32: float @powf
-
-; WIN64-LABEL: @float_powsqrt(
 ; WIN64: float @sqrtf
 ; WIN64: float @llvm.fabs.f32(
 ; WIN64-NOT: float @powf
-
-; MINGW32-LABEL: @float_powsqrt(
 ; MINGW32: float @sqrtf
 ; MINGW32: float @llvm.fabs.f32
 ; MINGW32-NOT: float @powf
-; MINGW64-LABEL: @float_powsqrt(
 ; MINGW64: float @sqrtf
 ; MINGW64: float @llvm.fabs.f32(
 ; MINGW64-NOT: float @powf