instcombine: Migrate math library call simplifications

This patch migrates the math library call simplifications from the
simplify-libcalls pass into the instcombine library call simplifier.

I have typically migrated just one simplifier at a time, but the math
simplifiers are interdependent because:

   1. CosOpt, PowOpt, and Exp2Opt all depend on UnaryDoubleFPOpt.
   2. CosOpt, PowOpt, Exp2Opt, and UnaryDoubleFPOpt all depend on
      the option -enable-double-float-shrink.

These two factors made migrating each of these simplifiers individually
more of a pain than it would be worth.  So, I migrated them all together.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167815 91177308-0d34-0410-b5e6-96231b3b80d8

6 files changed, 0 insertions, 540 deletions

diff --git a/test/Transforms/SimplifyLibCalls/cos.ll b/test/Transforms/SimplifyLibCalls/cos.ll
deleted file mode 100644
index 6a8ce8c..0000000
--- a/test/Transforms/SimplifyLibCalls/cos.ll
+++ /dev/null
@@ -1,14 +0,0 @@
-; RUN: opt < %s -simplify-libcalls -S | FileCheck %s
-
-target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
-target triple = "x86_64-unknown-linux-gnu"
-
-define double @foo(double %d) nounwind readnone {
-; CHECK: @foo
-    %1 = fsub double -0.000000e+00, %d
-    %2 = call double @cos(double %1) nounwind readnone
-; CHECK: call double @cos(double %d)
-    ret double %2
-}
-
-declare double @cos(double) nounwind readnone
diff --git a/test/Transforms/SimplifyLibCalls/double-float-shrink.ll b/test/Transforms/SimplifyLibCalls/double-float-shrink.ll
deleted file mode 100644
index b4ab8b4..0000000
--- a/test/Transforms/SimplifyLibCalls/double-float-shrink.ll
+++ /dev/null
@@ -1,333 +0,0 @@
-; RUN: opt  < %s -simplify-libcalls -enable-double-float-shrink -S | FileCheck %s
-
-target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
-target triple = "x86_64-unknown-linux-gnu"
-
-define float @acos_test(float %f) nounwind readnone {
-; CHECK: acos_test
-    %conv = fpext float %f to double
-    %call = call double @acos(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @acosf(float %f)
-}
-
-define double @acos_test2(float %f) nounwind readnone {
-; CHECK: acos_test2
-    %conv = fpext float %f to double
-    %call = call double @acos(double %conv)
-    ret double %call
-; CHECK: call double @acos(double %conv)
-}
-
-define float @acosh_test(float %f) nounwind readnone {
-; CHECK: acosh_test
-    %conv = fpext float %f to double
-    %call = call double @acosh(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @acoshf(float %f)
-}
-
-define double @acosh_test2(float %f) nounwind readnone {
-; CHECK: acosh_test2
-    %conv = fpext float %f to double
-    %call = call double @acosh(double %conv)
-    ret double %call
-; CHECK: call double @acosh(double %conv)
-}
-
-define float @asin_test(float %f) nounwind readnone {
-; CHECK: asin_test
-    %conv = fpext float %f to double
-    %call = call double @asin(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @asinf(float %f)
-}
-
-define double @asin_test2(float %f) nounwind readnone {
-; CHECK: asin_test2
-    %conv = fpext float %f to double
-    %call = call double @asin(double %conv)
-    ret double %call
-; CHECK: call double @asin(double %conv)
-}
-
-define float @asinh_test(float %f) nounwind readnone {
-; CHECK: asinh_test
-    %conv = fpext float %f to double
-    %call = call double @asinh(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @asinhf(float %f)
-}
-
-define double @asinh_test2(float %f) nounwind readnone {
-; CHECK: asinh_test2
-    %conv = fpext float %f to double
-    %call = call double @asinh(double %conv)
-    ret double %call
-; CHECK: call double @asinh(double %conv)
-}
-
-define float @atan_test(float %f) nounwind readnone {
-; CHECK: atan_test
-    %conv = fpext float %f to double
-    %call = call double @atan(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @atanf(float %f)
-}
-
-define double @atan_test2(float %f) nounwind readnone {
-; CHECK: atan_test2
-    %conv = fpext float %f to double
-    %call = call double @atan(double %conv)
-    ret double %call
-; CHECK: call double @atan(double %conv)
-}
-define float @atanh_test(float %f) nounwind readnone {
-; CHECK: atanh_test
-    %conv = fpext float %f to double
-    %call = call double @atanh(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @atanhf(float %f)
-}
-
-define double @atanh_test2(float %f) nounwind readnone {
-; CHECK: atanh_test2
-    %conv = fpext float %f to double
-    %call = call double @atanh(double %conv)
-    ret double %call
-; CHECK: call double @atanh(double %conv)
-}
-define float @cbrt_test(float %f) nounwind readnone {
-; CHECK: cbrt_test
-    %conv = fpext float %f to double
-    %call = call double @cbrt(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @cbrtf(float %f)
-}
-
-define double @cbrt_test2(float %f) nounwind readnone {
-; CHECK: cbrt_test2
-    %conv = fpext float %f to double
-    %call = call double @cbrt(double %conv)
-    ret double %call
-; CHECK: call double @cbrt(double %conv)
-}
-define float @exp_test(float %f) nounwind readnone {
-; CHECK: exp_test
-    %conv = fpext float %f to double
-    %call = call double @exp(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @expf(float %f)
-}
-
-define double @exp_test2(float %f) nounwind readnone {
-; CHECK: exp_test2
-    %conv = fpext float %f to double
-    %call = call double @exp(double %conv)
-    ret double %call
-; CHECK: call double @exp(double %conv)
-}
-define float @expm1_test(float %f) nounwind readnone {
-; CHECK: expm1_test
-    %conv = fpext float %f to double
-    %call = call double @expm1(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @expm1f(float %f)
-}
-
-define double @expm1_test2(float %f) nounwind readnone {
-; CHECK: expm1_test2
-    %conv = fpext float %f to double
-    %call = call double @expm1(double %conv)
-    ret double %call
-; CHECK: call double @expm1(double %conv)
-}
-define float @exp10_test(float %f) nounwind readnone {
-; CHECK: exp10_test
-    %conv = fpext float %f to double
-    %call = call double @exp10(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @exp10f(float %f)
-}
-
-define double @exp10_test2(float %f) nounwind readnone {
-; CHECK: exp10_test2
-    %conv = fpext float %f to double
-    %call = call double @exp10(double %conv)
-    ret double %call
-; CHECK: call double @exp10(double %conv)
-}
-define float @log_test(float %f) nounwind readnone {
-; CHECK: log_test
-    %conv = fpext float %f to double
-    %call = call double @log(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @logf(float %f)
-}
-
-define double @log_test2(float %f) nounwind readnone {
-; CHECK: log_test2
-    %conv = fpext float %f to double
-    %call = call double @log(double %conv)
-    ret double %call
-; CHECK: call double @log(double %conv)
-}
-define float @log10_test(float %f) nounwind readnone {
-; CHECK: log10_test
-    %conv = fpext float %f to double
-    %call = call double @log10(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @log10f(float %f)
-}
-
-define double @log10_test2(float %f) nounwind readnone {
-; CHECK: log10_test2
-    %conv = fpext float %f to double
-    %call = call double @log10(double %conv)
-    ret double %call
-; CHECK: call double @log10(double %conv)
-}
-define float @log1p_test(float %f) nounwind readnone {
-; CHECK: log1p_test
-    %conv = fpext float %f to double
-    %call = call double @log1p(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @log1pf(float %f)
-}
-
-define double @log1p_test2(float %f) nounwind readnone {
-; CHECK: log1p_test2
-    %conv = fpext float %f to double
-    %call = call double @log1p(double %conv)
-    ret double %call
-; CHECK: call double @log1p(double %conv)
-}
-define float @log2_test(float %f) nounwind readnone {
-; CHECK: log2_test
-    %conv = fpext float %f to double
-    %call = call double @log2(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @log2f(float %f)
-}
-
-define double @log2_test2(float %f) nounwind readnone {
-; CHECK: log2_test2
-    %conv = fpext float %f to double
-    %call = call double @log2(double %conv)
-    ret double %call
-; CHECK: call double @log2(double %conv)
-}
-define float @logb_test(float %f) nounwind readnone {
-; CHECK: logb_test
-    %conv = fpext float %f to double
-    %call = call double @logb(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @logbf(float %f)
-}
-
-define double @logb_test2(float %f) nounwind readnone {
-; CHECK: logb_test2
-    %conv = fpext float %f to double
-    %call = call double @logb(double %conv)
-    ret double %call
-; CHECK: call double @logb(double %conv)
-}
-define float @sin_test(float %f) nounwind readnone {
-; CHECK: sin_test
-    %conv = fpext float %f to double
-    %call = call double @sin(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @sinf(float %f)
-}
-
-define double @sin_test2(float %f) nounwind readnone {
-; CHECK: sin_test2
-    %conv = fpext float %f to double
-    %call = call double @sin(double %conv)
-    ret double %call
-; CHECK: call double @sin(double %conv)
-}
-define float @sqrt_test(float %f) nounwind readnone {
-; CHECK: sqrt_test
-    %conv = fpext float %f to double
-    %call = call double @sqrt(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @sqrtf(float %f)
-}
-
-define double @sqrt_test2(float %f) nounwind readnone {
-; CHECK: sqrt_test2
-    %conv = fpext float %f to double
-    %call = call double @sqrt(double %conv)
-    ret double %call
-; CHECK: call double @sqrt(double %conv)
-}
-define float @tan_test(float %f) nounwind readnone {
-; CHECK: tan_test
-    %conv = fpext float %f to double
-    %call = call double @tan(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @tanf(float %f)
-}
-
-define double @tan_test2(float %f) nounwind readnone {
-; CHECK: tan_test2
-    %conv = fpext float %f to double
-    %call = call double @tan(double %conv)
-    ret double %call
-; CHECK: call double @tan(double %conv)
-}
-define float @tanh_test(float %f) nounwind readnone {
-; CHECK: tanh_test
-    %conv = fpext float %f to double
-    %call = call double @tanh(double %conv)
-    %conv1 = fptrunc double %call to float
-    ret float %conv1
-; CHECK: call float @tanhf(float %f)
-}
-
-define double @tanh_test2(float %f) nounwind readnone {
-; CHECK: tanh_test2
-    %conv = fpext float %f to double
-    %call = call double @tanh(double %conv)
-    ret double %call
-; CHECK: call double @tanh(double %conv)
-}
-
-declare double @tanh(double) nounwind readnone
-declare double @tan(double) nounwind readnone
-declare double @sqrt(double) nounwind readnone
-declare double @sin(double) nounwind readnone
-declare double @log2(double) nounwind readnone
-declare double @log1p(double) nounwind readnone
-declare double @log10(double) nounwind readnone
-declare double @log(double) nounwind readnone
-declare double @logb(double) nounwind readnone
-declare double @exp10(double) nounwind readnone
-declare double @expm1(double) nounwind readnone
-declare double @exp(double) nounwind readnone
-declare double @cbrt(double) nounwind readnone
-declare double @atanh(double) nounwind readnone
-declare double @atan(double) nounwind readnone
-declare double @acos(double) nounwind readnone
-declare double @acosh(double) nounwind readnone
-declare double @asin(double) nounwind readnone
-declare double @asinh(double) nounwind readnone
diff --git a/test/Transforms/SimplifyLibCalls/exp2.ll b/test/Transforms/SimplifyLibCalls/exp2.ll
deleted file mode 100644
index a592775..0000000
--- a/test/Transforms/SimplifyLibCalls/exp2.ll
+++ /dev/null
@@ -1,38 +0,0 @@
-; RUN: opt < %s -simplify-libcalls -S | grep "call.*ldexp" | count 4
-; rdar://5852514
-
-target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
-target triple = "i386-apple-darwin8"
-
-define double @t1(i32 %x) nounwind  {
-entry:
-	%tmp12 = sitofp i32 %x to double		; <double> [#uses=1]
-	%exp2 = tail call double @exp2( double %tmp12 )		; <double> [#uses=1]
-	ret double %exp2
-}
-
-define float @t4(i8 zeroext  %x) nounwind  {
-entry:
-	%tmp12 = uitofp i8 %x to float		; <float> [#uses=1]
-	%tmp3 = tail call float @exp2f( float %tmp12 ) nounwind readonly 		; <float> [#uses=1]
-	ret float %tmp3
-}
-
-declare float @exp2f(float) nounwind readonly 
-
-define double @t3(i16 zeroext  %x) nounwind  {
-entry:
-	%tmp12 = uitofp i16 %x to double		; <double> [#uses=1]
-	%exp2 = tail call double @exp2( double %tmp12 )		; <double> [#uses=1]
-	ret double %exp2
-}
-
-define double @t2(i16 signext  %x) nounwind  {
-entry:
-	%tmp12 = sitofp i16 %x to double		; <double> [#uses=1]
-	%exp2 = tail call double @exp2( double %tmp12 )		; <double> [#uses=1]
-	ret double %exp2
-}
-
-declare double @exp2(double)
-
diff --git a/test/Transforms/SimplifyLibCalls/floor.ll b/test/Transforms/SimplifyLibCalls/floor.ll
deleted file mode 100644
index 93c62c2..0000000
--- a/test/Transforms/SimplifyLibCalls/floor.ll
+++ /dev/null
@@ -1,85 +0,0 @@
-; RUN: opt < %s -simplify-libcalls -S -mtriple "i386-pc-linux" | FileCheck -check-prefix=DO-SIMPLIFY %s
-; RUN: opt < %s -simplify-libcalls -S -mtriple "i386-pc-win32" | FileCheck -check-prefix=DONT-SIMPLIFY %s
-; RUN: opt < %s -simplify-libcalls -S -mtriple "x86_64-pc-win32" | FileCheck -check-prefix=C89-SIMPLIFY %s
-; RUN: opt < %s -simplify-libcalls -S -mtriple "i386-pc-mingw32" | FileCheck -check-prefix=DO-SIMPLIFY %s
-; RUN: opt < %s -simplify-libcalls -S -mtriple "x86_64-pc-mingw32" | FileCheck -check-prefix=DO-SIMPLIFY %s
-; RUN: opt < %s -simplify-libcalls -S -mtriple "sparc-sun-solaris" | FileCheck -check-prefix=DO-SIMPLIFY %s
-
-; DO-SIMPLIFY: call float @floorf(
-; DO-SIMPLIFY: call float @ceilf(
-; DO-SIMPLIFY: call float @roundf(
-; DO-SIMPLIFY: call float @nearbyintf(
-; DO-SIMPLIFY: call float @truncf(
-; DO-SIMPLIFY: call float @fabsf(
-
-; C89-SIMPLIFY: call float @floorf(
-; C89-SIMPLIFY: call float @ceilf(
-; C89-SIMPLIFY: call double @round(
-; C89-SIMPLIFY: call double @nearbyint(
-
-; DONT-SIMPLIFY: call double @floor(
-; DONT-SIMPLIFY: call double @ceil(
-; DONT-SIMPLIFY: call double @round(
-; DONT-SIMPLIFY: call double @nearbyint(
-; DONT-SIMPLIFY: call double @trunc(
-; DONT-SIMPLIFY: call double @fabs(
-
-declare double @floor(double)
-
-declare double @ceil(double)
-
-declare double @round(double)
-
-declare double @nearbyint(double)
-
-declare double @trunc(double)
-
-declare double @fabs(double)
-
-define float @test_floor(float %C) {
-	%D = fpext float %C to double		; <double> [#uses=1]
-        ; --> floorf
-	%E = call double @floor( double %D )		; <double> [#uses=1]
-	%F = fptrunc double %E to float		; <float> [#uses=1]
-	ret float %F
-}
-
-define float @test_ceil(float %C) {
-	%D = fpext float %C to double		; <double> [#uses=1]
-	; --> ceilf
-        %E = call double @ceil( double %D )		; <double> [#uses=1]
-	%F = fptrunc double %E to float		; <float> [#uses=1]
-	ret float %F
-}
-
-define float @test_round(float %C) {
-	%D = fpext float %C to double		; <double> [#uses=1]
-	; --> roundf
-        %E = call double @round( double %D )		; <double> [#uses=1]
-	%F = fptrunc double %E to float		; <float> [#uses=1]
-	ret float %F
-}
-
-define float @test_nearbyint(float %C) {
-	%D = fpext float %C to double		; <double> [#uses=1]
-	; --> nearbyintf
-        %E = call double @nearbyint( double %D )		; <double> [#uses=1]
-	%F = fptrunc double %E to float		; <float> [#uses=1]
-	ret float %F
-}
-
-define float @test_trunc(float %C) {
-	%D = fpext float %C to double
-	; --> truncf
-        %E = call double @trunc(double %D)
-	%F = fptrunc double %E to float
-	ret float %F
-}
-
-define float @test_fabs(float %C) {
-	%D = fpext float %C to double
-	; --> fabsf
-        %E = call double @fabs(double %D)
-	%F = fptrunc double %E to float
-	ret float %F
-}
diff --git a/test/Transforms/SimplifyLibCalls/pow-to-sqrt.ll b/test/Transforms/SimplifyLibCalls/pow-to-sqrt.ll
deleted file mode 100644
index 0480fdd..0000000
--- a/test/Transforms/SimplifyLibCalls/pow-to-sqrt.ll
+++ /dev/null
@@ -1,33 +0,0 @@
-; RUN: opt < %s -simplify-libcalls -S | FileCheck %s
-; rdar://7251832
-
-; SimplifyLibcalls should optimize pow(x, 0.5) to sqrt plus code to handle
-; special cases. The readonly attribute on the call should be preserved.
-
-; CHECK: define float @foo(float %x) nounwind {
-; CHECK:   %sqrtf = call float @sqrtf(float %x) nounwind readonly
-; CHECK:   %fabsf = call float @fabsf(float %sqrtf) nounwind readonly
-; CHECK:   %1 = fcmp oeq float %x, 0xFFF0000000000000
-; CHECK:   %retval = select i1 %1, float 0x7FF0000000000000, float %fabsf
-; CHECK:   ret float %retval
-
-define float @foo(float %x) nounwind {
-  %retval = call float @powf(float %x, float 0.5)
-  ret float %retval
-}
-
-; CHECK: define double @doo(double %x) nounwind {
-; CHECK:   %sqrt = call double @sqrt(double %x) nounwind readonly
-; CHECK:   %fabs = call double @fabs(double %sqrt) nounwind readonly
-; CHECK:   %1 = fcmp oeq double %x, 0xFFF0000000000000
-; CHECK:   %retval = select i1 %1, double 0x7FF0000000000000, double %fabs
-; CHECK:   ret double %retval
-; CHECK: }
-
-define double @doo(double %x) nounwind {
-  %retval = call double @pow(double %x, double 0.5)
-  ret double %retval
-}
-
-declare float @powf(float, float) nounwind readonly
-declare double @pow(double, double) nounwind readonly
diff --git a/test/Transforms/SimplifyLibCalls/pow2.ll b/test/Transforms/SimplifyLibCalls/pow2.ll
deleted file mode 100644
index f0964e7..0000000
--- a/test/Transforms/SimplifyLibCalls/pow2.ll
+++ /dev/null
@@ -1,37 +0,0 @@
-; Testcase for calls to the standard C "pow" function
-;
-; RUN: opt < %s -simplify-libcalls -S | not grep "call .pow"
-
-
-declare double @pow(double, double)
-declare float @powf(float, float)
-
-define double @test1(double %X) {
-	%Y = call double @pow( double %X, double 0.000000e+00 )		; <double> [#uses=1]
-	ret double %Y
-}
-
-define double @test2(double %X) {
-	%Y = call double @pow( double %X, double -0.000000e+00 )		; <double> [#uses=1]
-	ret double %Y
-}
-
-define double @test3(double %X) {
-	%Y = call double @pow( double 1.000000e+00, double %X )		; <double> [#uses=1]
-	ret double %Y
-}
-
-define double @test4(double %X) {
-	%Y = call double @pow( double %X, double 2.0)
-	ret double %Y
-}
-
-define float @test4f(float %X) {
-	%Y = call float @powf( float %X, float 2.0)
-	ret float %Y
-}
-
-define float @test5f(float %X) {
-	%Y = call float @powf(float 2.0, float %X)  ;; exp2
-	ret float %Y
-}