[llvm] r317804 - [Reassociate] add tests with 'reassoc' FMF and regenerate checks; NFC

Sanjay Patel via llvm-commits llvm-commits at lists.llvm.org
Thu Nov 9 08:23:32 PST 2017


Author: spatel
Date: Thu Nov  9 08:23:32 2017
New Revision: 317804

URL: http://llvm.org/viewvc/llvm-project?rev=317804&view=rev
Log:
[Reassociate] add tests with 'reassoc' FMF and regenerate checks; NFC

Modified:
    llvm/trunk/test/Transforms/Reassociate/fast-ReassociateVector.ll

Modified: llvm/trunk/test/Transforms/Reassociate/fast-ReassociateVector.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/Reassociate/fast-ReassociateVector.ll?rev=317804&r1=317803&r2=317804&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/Reassociate/fast-ReassociateVector.ll (original)
+++ llvm/trunk/test/Transforms/Reassociate/fast-ReassociateVector.ll Thu Nov  9 08:23:32 2017
@@ -1,26 +1,43 @@
 ; RUN: opt < %s -reassociate -S | FileCheck %s
 
 ; Check that a*c+b*c is turned into (a+b)*c
-define <4 x float> @test1(<4 x float> %a, <4 x float> %b, <4 x float> %c) {
-; CHECK-LABEL: @test1
-; CHECK-NEXT: %tmp = fadd fast <4 x float> %b, %a
-; CHECK-NEXT: %tmp1 = fmul fast <4 x float> %tmp, %c
-; CHECK-NEXT: ret <4 x float> %tmp1
 
+define <4 x float> @test1(<4 x float> %a, <4 x float> %b, <4 x float> %c) {
+; CHECK-LABEL: @test1(
+; CHECK-NEXT:    [[TMP:%.*]] = fadd fast <4 x float> %b, %a
+; CHECK-NEXT:    [[TMP1:%.*]] = fmul fast <4 x float> [[TMP]], %c
+; CHECK-NEXT:    ret <4 x float> [[TMP1]]
+;
   %mul = fmul fast <4 x float> %a, %c
   %mul1 = fmul fast <4 x float> %b, %c
   %add = fadd fast <4 x float> %mul, %mul1
   ret <4 x float> %add
 }
 
+; Check that a*c+b*c is turned into (a+b)*c - minimum FMF subset version
+
+define <4 x float> @test1_reassoc(<4 x float> %a, <4 x float> %b, <4 x float> %c) {
+; CHECK-LABEL: @test1_reassoc(
+; CHECK-NEXT:    [[MUL:%.*]] = fmul reassoc <4 x float> %a, %c
+; CHECK-NEXT:    [[MUL1:%.*]] = fmul reassoc <4 x float> %b, %c
+; CHECK-NEXT:    [[ADD:%.*]] = fadd reassoc <4 x float> [[MUL]], [[MUL1]]
+; CHECK-NEXT:    ret <4 x float> [[ADD]]
+;
+  %mul = fmul reassoc <4 x float> %a, %c
+  %mul1 = fmul reassoc <4 x float> %b, %c
+  %add = fadd reassoc <4 x float> %mul, %mul1
+  ret <4 x float> %add
+}
+
 ; Check that a*a*b+a*a*c is turned into a*(a*(b+c)).
-define <2 x float> @test2(<2 x float> %a, <2 x float> %b, <2 x float> %c) {
-; CHECK-LABEL: @test2
-; CHECK-NEXT: [[TMP1:%tmp.*]] = fadd fast <2 x float> %c, %b
-; CHECK-NEXT: [[TMP2:%tmp.*]] = fmul fast <2 x float> %a, %a
-; CHECK-NEXT: fmul fast <2 x float> [[TMP2]], [[TMP1]]
-; CHECK-NEXT: ret <2 x float>
 
+define <2 x float> @test2(<2 x float> %a, <2 x float> %b, <2 x float> %c) {
+; CHECK-LABEL: @test2(
+; CHECK-NEXT:    [[TMP2:%.*]] = fadd fast <2 x float> %c, %b
+; CHECK-NEXT:    [[TMP3:%.*]] = fmul fast <2 x float> %a, %a
+; CHECK-NEXT:    [[TMP1:%.*]] = fmul fast <2 x float> [[TMP3]], [[TMP2]]
+; CHECK-NEXT:    ret <2 x float> [[TMP1]]
+;
   %t0 = fmul fast <2 x float> %a, %b
   %t1 = fmul fast <2 x float> %a, %t0
   %t2 = fmul fast <2 x float> %a, %c
@@ -29,14 +46,34 @@ define <2 x float> @test2(<2 x float> %a
   ret <2 x float> %t4
 }
 
+; Check that a*a*b+a*a*c is turned into a*(a*(b+c)) - minimum FMF subset version
+
+define <2 x float> @test2_reassoc(<2 x float> %a, <2 x float> %b, <2 x float> %c) {
+; CHECK-LABEL: @test2_reassoc(
+; CHECK-NEXT:    [[T0:%.*]] = fmul reassoc <2 x float> %a, %b
+; CHECK-NEXT:    [[T1:%.*]] = fmul reassoc <2 x float> %a, [[T0]]
+; CHECK-NEXT:    [[T2:%.*]] = fmul reassoc <2 x float> %a, %c
+; CHECK-NEXT:    [[T3:%.*]] = fmul reassoc <2 x float> %a, [[T2]]
+; CHECK-NEXT:    [[T4:%.*]] = fadd reassoc <2 x float> [[T1]], [[T3]]
+; CHECK-NEXT:    ret <2 x float> [[T4]]
+;
+  %t0 = fmul reassoc <2 x float> %a, %b
+  %t1 = fmul reassoc <2 x float> %a, %t0
+  %t2 = fmul reassoc <2 x float> %a, %c
+  %t3 = fmul reassoc <2 x float> %a, %t2
+  %t4 = fadd reassoc <2 x float> %t1, %t3
+  ret <2 x float> %t4
+}
+
 ; Check that a*b+a*c+d is turned into a*(b+c)+d.
-define <2 x double> @test3(<2 x double> %a, <2 x double> %b, <2 x double> %c, <2 x double> %d) {
-; CHECK-LABEL: @test3
-; CHECK-NEXT: fadd fast <2 x double> %c, %b
-; CHECK-NEXT: fmul fast <2 x double> %tmp, %a
-; CHECK-NEXT: fadd fast <2 x double> %tmp1, %d
-; CHECK-NEXT: ret <2 x double>
 
+define <2 x double> @test3(<2 x double> %a, <2 x double> %b, <2 x double> %c, <2 x double> %d) {
+; CHECK-LABEL: @test3(
+; CHECK-NEXT:    [[TMP:%.*]] = fadd fast <2 x double> %c, %b
+; CHECK-NEXT:    [[TMP1:%.*]] = fmul fast <2 x double> [[TMP]], %a
+; CHECK-NEXT:    [[T3:%.*]] = fadd fast <2 x double> [[TMP1]], %d
+; CHECK-NEXT:    ret <2 x double> [[T3]]
+;
   %t0 = fmul fast <2 x double> %a, %b
   %t1 = fmul fast <2 x double> %a, %c
   %t2 = fadd fast <2 x double> %t1, %d
@@ -44,14 +81,32 @@ define <2 x double> @test3(<2 x double>
   ret <2 x double> %t3
 }
 
+; Check that a*b+a*c+d is turned into a*(b+c)+d - minimum FMF subset version
+
+define <2 x double> @test3_reassoc(<2 x double> %a, <2 x double> %b, <2 x double> %c, <2 x double> %d) {
+; CHECK-LABEL: @test3_reassoc(
+; CHECK-NEXT:    [[T0:%.*]] = fmul reassoc <2 x double> %a, %b
+; CHECK-NEXT:    [[T1:%.*]] = fmul reassoc <2 x double> %a, %c
+; CHECK-NEXT:    [[T2:%.*]] = fadd reassoc <2 x double> [[T1]], %d
+; CHECK-NEXT:    [[T3:%.*]] = fadd reassoc <2 x double> [[T0]], [[T2]]
+; CHECK-NEXT:    ret <2 x double> [[T3]]
+;
+  %t0 = fmul reassoc <2 x double> %a, %b
+  %t1 = fmul reassoc <2 x double> %a, %c
+  %t2 = fadd reassoc <2 x double> %t1, %d
+  %t3 = fadd reassoc <2 x double> %t0, %t2
+  ret <2 x double> %t3
+}
+
 ; No fast-math.
-define <2 x float> @test4(<2 x float> %A) {
-; CHECK-LABEL: @test4
-; CHECK-NEXT: %X = fadd <2 x float> %A, <float 1.000000e+00, float 1.000000e+00>
-; CHECK-NEXT: %Y = fadd <2 x float> %A, <float 1.000000e+00, float 1.000000e+00>
-; CHECK-NEXT: %R = fsub <2 x float> %X, %Y
-; CHECK-NEXT: ret <2 x float> %R
 
+define <2 x float> @test4(<2 x float> %A) {
+; CHECK-LABEL: @test4(
+; CHECK-NEXT:    [[X:%.*]] = fadd <2 x float> %A, <float 1.000000e+00, float 1.000000e+00>
+; CHECK-NEXT:    [[Y:%.*]] = fadd <2 x float> %A, <float 1.000000e+00, float 1.000000e+00>
+; CHECK-NEXT:    [[R:%.*]] = fsub <2 x float> [[X]], [[Y]]
+; CHECK-NEXT:    ret <2 x float> [[R]]
+;
   %X = fadd <2 x float> %A, < float 1.000000e+00, float 1.000000e+00 >
   %Y = fadd <2 x float> %A, < float 1.000000e+00, float 1.000000e+00 >
   %R = fsub <2 x float> %X, %Y
@@ -59,56 +114,116 @@ define <2 x float> @test4(<2 x float> %A
 }
 
 ; Check 47*X + 47*X -> 94*X.
-define <2 x float> @test5(<2 x float> %X) {
-; CHECK-LABEL: @test5
-; CHECK-NEXT: fmul fast <2 x float> %X, <float 9.400000e+01, float 9.400000e+01>
-; CHECK-NEXT: ret <2 x float>
 
+define <2 x float> @test5(<2 x float> %X) {
+; CHECK-LABEL: @test5(
+; CHECK-NEXT:    [[FACTOR:%.*]] = fmul fast <2 x float> %X, <float 9.400000e+01, float 9.400000e+01>
+; CHECK-NEXT:    ret <2 x float> [[FACTOR]]
+;
   %Y = fmul fast <2 x float> %X, <float 4.700000e+01, float 4.700000e+01>
   %Z = fadd fast <2 x float> %Y, %Y
   ret <2 x float> %Z
 }
 
+; Check 47*X + 47*X -> 94*X - minimum FMF subset version
+
+define <2 x float> @test5_reassoc(<2 x float> %X) {
+; CHECK-LABEL: @test5_reassoc(
+; CHECK-NEXT:    [[Y:%.*]] = fmul reassoc <2 x float> %X, <float 4.700000e+01, float 4.700000e+01>
+; CHECK-NEXT:    [[Z:%.*]] = fadd reassoc <2 x float> [[Y]], [[Y]]
+; CHECK-NEXT:    ret <2 x float> [[Z]]
+;
+  %Y = fmul reassoc <2 x float> %X, <float 4.700000e+01, float 4.700000e+01>
+  %Z = fadd reassoc <2 x float> %Y, %Y
+  ret <2 x float> %Z
+}
+
 ; Check X+X+X -> 3*X.
-define <2 x float> @test6(<2 x float> %X) {
-; CHECK-LABEL: @test6
-; CHECK-NEXT: fmul fast <2 x float> %X, <float 3.000000e+00, float 3.000000e+00>
-; CHECK-NEXT: ret <2 x float>
 
+define <2 x float> @test6(<2 x float> %X) {
+; CHECK-LABEL: @test6(
+; CHECK-NEXT:    [[FACTOR:%.*]] = fmul fast <2 x float> %X, <float 3.000000e+00, float 3.000000e+00>
+; CHECK-NEXT:    ret <2 x float> [[FACTOR]]
+;
   %Y = fadd fast <2 x float> %X ,%X
   %Z = fadd fast <2 x float> %Y, %X
   ret <2 x float> %Z
 }
 
+; Check X+X+X -> 3*X - minimum FMF subset version
+
+define <2 x float> @test6_reassoc(<2 x float> %X) {
+; CHECK-LABEL: @test6_reassoc(
+; CHECK-NEXT:    [[Y:%.*]] = fadd reassoc <2 x float> %X, %X
+; CHECK-NEXT:    [[Z:%.*]] = fadd reassoc <2 x float> %X, [[Y]]
+; CHECK-NEXT:    ret <2 x float> [[Z]]
+;
+  %Y = fadd reassoc <2 x float> %X ,%X
+  %Z = fadd reassoc <2 x float> %Y, %X
+  ret <2 x float> %Z
+}
+
 ; Check 127*W+50*W -> 177*W.
-define <2 x double> @test7(<2 x double> %W) {
-; CHECK-LABEL: @test7
-; CHECK-NEXT: fmul fast <2 x double> %W, <double 1.770000e+02, double 1.770000e+02>
-; CHECK-NEXT: ret <2 x double>
 
+define <2 x double> @test7(<2 x double> %W) {
+; CHECK-LABEL: @test7(
+; CHECK-NEXT:    [[TMP1:%.*]] = fmul fast <2 x double> %W, <double 1.770000e+02, double 1.770000e+02>
+; CHECK-NEXT:    ret <2 x double> [[TMP1]]
+;
   %X = fmul fast <2 x double> %W, <double 127.0, double 127.0>
   %Y = fmul fast <2 x double> %W, <double 50.0, double 50.0>
   %Z = fadd fast <2 x double> %Y, %X
   ret <2 x double> %Z
 }
 
+; Check 127*W+50*W -> 177*W - minimum FMF subset version
+
+define <2 x double> @test7_reassoc(<2 x double> %W) {
+; CHECK-LABEL: @test7_reassoc(
+; CHECK-NEXT:    [[X:%.*]] = fmul reassoc <2 x double> %W, <double 1.270000e+02, double 1.270000e+02>
+; CHECK-NEXT:    [[Y:%.*]] = fmul reassoc <2 x double> %W, <double 5.000000e+01, double 5.000000e+01>
+; CHECK-NEXT:    [[Z:%.*]] = fadd reassoc <2 x double> [[Y]], [[X]]
+; CHECK-NEXT:    ret <2 x double> [[Z]]
+;
+  %X = fmul reassoc <2 x double> %W, <double 127.0, double 127.0>
+  %Y = fmul reassoc <2 x double> %W, <double 50.0, double 50.0>
+  %Z = fadd reassoc <2 x double> %Y, %X
+  ret <2 x double> %Z
+}
+
 ; Check X*12*12 -> X*144.
-define <2 x float> @test8(<2 x float> %arg) {
-; CHECK-LABEL: @test8
-; CHECK: fmul fast <2 x float> %arg, <float 1.440000e+02, float 1.440000e+02>
-; CHECK-NEXT: ret <2 x float> %tmp2
 
+define <2 x float> @test8(<2 x float> %arg) {
+; CHECK-LABEL: @test8(
+; CHECK-NEXT:    [[TMP2:%.*]] = fmul fast <2 x float> %arg, <float 1.440000e+02, float 1.440000e+02>
+; CHECK-NEXT:    ret <2 x float> [[TMP2]]
+;
   %tmp1 = fmul fast <2 x float> <float 1.200000e+01, float 1.200000e+01>, %arg
   %tmp2 = fmul fast <2 x float> %tmp1, <float 1.200000e+01, float 1.200000e+01>
   ret <2 x float> %tmp2
 }
 
+; Check X*12*12 -> X*144 - minimum FMF subset version
+
+define <2 x float> @test8_reassoc(<2 x float> %arg) {
+; CHECK-LABEL: @test8_reassoc(
+; CHECK-NEXT:    [[TMP1:%.*]] = fmul reassoc <2 x float> %arg, <float 1.200000e+01, float 1.200000e+01>
+; CHECK-NEXT:    [[TMP2:%.*]] = fmul reassoc <2 x float> [[TMP1]], <float 1.200000e+01, float 1.200000e+01>
+; CHECK-NEXT:    ret <2 x float> [[TMP2]]
+;
+  %tmp1 = fmul reassoc <2 x float> <float 1.200000e+01, float 1.200000e+01>, %arg
+  %tmp2 = fmul reassoc <2 x float> %tmp1, <float 1.200000e+01, float 1.200000e+01>
+  ret <2 x float> %tmp2
+}
+
 ; Check (b+(a+1234))+-a -> b+1234.
-define <2 x double> @test9(<2 x double> %b, <2 x double> %a) {
-; CHECK-LABEL: @test9
-; CHECK: fadd fast <2 x double> %b, <double 1.234000e+03, double 1.234000e+03>
-; CHECK-NEXT: ret <2 x double>
 
+define <2 x double> @test9(<2 x double> %b, <2 x double> %a) {
+; CHECK-LABEL: @test9(
+; CHECK-NEXT:    [[TMP1:%.*]] = fsub fast <2 x double> zeroinitializer, %a
+; CHECK-NEXT:    [[TMP2:%.*]] = fadd fast <2 x double> %b, <double 1.234000e+03, double 1.234000e+03>
+; CHECK-NEXT:    ret <2 x double> [[TMP2]]
+;
   %1 = fadd fast <2 x double> %a, <double 1.234000e+03, double 1.234000e+03>
   %2 = fadd fast <2 x double> %b, %1
   %3 = fsub fast <2 x double> <double 0.000000e+00, double 0.000000e+00>, %a
@@ -116,13 +231,32 @@ define <2 x double> @test9(<2 x double>
   ret <2 x double> %4
 }
 
+; Check (b+(a+1234))+-a -> b+1234 - minimum FMF subset version
+
+define <2 x double> @test9_reassoc(<2 x double> %b, <2 x double> %a) {
+; CHECK-LABEL: @test9_reassoc(
+; CHECK-NEXT:    [[TMP1:%.*]] = fadd reassoc <2 x double> %a, <double 1.234000e+03, double 1.234000e+03>
+; CHECK-NEXT:    [[TMP2:%.*]] = fadd reassoc <2 x double> %b, [[TMP1]]
+; CHECK-NEXT:    [[TMP3:%.*]] = fsub reassoc <2 x double> zeroinitializer, %a
+; CHECK-NEXT:    [[TMP4:%.*]] = fadd reassoc <2 x double> [[TMP3]], [[TMP2]]
+; CHECK-NEXT:    ret <2 x double> [[TMP4]]
+;
+  %1 = fadd reassoc <2 x double> %a, <double 1.234000e+03, double 1.234000e+03>
+  %2 = fadd reassoc <2 x double> %b, %1
+  %3 = fsub reassoc <2 x double> <double 0.000000e+00, double 0.000000e+00>, %a
+  %4 = fadd reassoc <2 x double> %2, %3
+  ret <2 x double> %4
+}
+
 ; Check -(-(z*40)*a) -> a*40*z.
-define <2 x float> @test10(<2 x float> %a, <2 x float> %b, <2 x float> %z) {
-; CHECK-LABEL: @test10
-; CHECK: fmul fast <2 x float> %a, <float 4.000000e+01, float 4.000000e+01>
-; CHECK-NEXT: fmul fast <2 x float> %e, %z
-; CHECK-NEXT: ret <2 x float>
 
+define <2 x float> @test10(<2 x float> %a, <2 x float> %b, <2 x float> %z) {
+; CHECK-LABEL: @test10(
+; CHECK-NEXT:    [[TMP1:%.*]] = fsub fast <2 x float> zeroinitializer, zeroinitializer
+; CHECK-NEXT:    [[E:%.*]] = fmul fast <2 x float> %a, <float 4.000000e+01, float 4.000000e+01>
+; CHECK-NEXT:    [[F:%.*]] = fmul fast <2 x float> [[E]], %z
+; CHECK-NEXT:    ret <2 x float> [[F]]
+;
   %d = fmul fast <2 x float> %z, <float 4.000000e+01, float 4.000000e+01>
   %c = fsub fast <2 x float> <float 0.000000e+00, float 0.000000e+00>, %d
   %e = fmul fast <2 x float> %a, %c
@@ -130,26 +264,60 @@ define <2 x float> @test10(<2 x float> %
   ret <2 x float> %f
 }
 
+; Check -(-(z*40)*a) -> a*40*z - minimum FMF subset version
+
+define <2 x float> @test10_reassoc(<2 x float> %a, <2 x float> %b, <2 x float> %z) {
+; CHECK-LABEL: @test10_reassoc(
+; CHECK-NEXT:    [[D:%.*]] = fmul reassoc <2 x float> %z, <float 4.000000e+01, float 4.000000e+01>
+; CHECK-NEXT:    [[C:%.*]] = fsub reassoc <2 x float> zeroinitializer, [[D]]
+; CHECK-NEXT:    [[E:%.*]] = fmul reassoc <2 x float> %a, [[C]]
+; CHECK-NEXT:    [[F:%.*]] = fsub reassoc <2 x float> zeroinitializer, [[E]]
+; CHECK-NEXT:    ret <2 x float> [[F]]
+;
+  %d = fmul reassoc <2 x float> %z, <float 4.000000e+01, float 4.000000e+01>
+  %c = fsub reassoc <2 x float> <float 0.000000e+00, float 0.000000e+00>, %d
+  %e = fmul reassoc <2 x float> %a, %c
+  %f = fsub reassoc <2 x float> <float 0.000000e+00, float 0.000000e+00>, %e
+  ret <2 x float> %f
+}
+
 ; Check x*y+y*x -> x*y*2.
-define <2 x double> @test11(<2 x double> %x, <2 x double> %y) {
-; CHECK-LABEL: @test11
-; CHECK-NEXT: %factor = fmul fast <2 x double> %x, <double 2.000000e+00, double 2.000000e+00>
-; CHECK-NEXT: %tmp1 = fmul fast <2 x double> %factor, %y
-; CHECK-NEXT: ret <2 x double> %tmp1
 
+define <2 x double> @test11(<2 x double> %x, <2 x double> %y) {
+; CHECK-LABEL: @test11(
+; CHECK-NEXT:    [[FACTOR:%.*]] = fmul fast <2 x double> %x, <double 2.000000e+00, double 2.000000e+00>
+; CHECK-NEXT:    [[TMP1:%.*]] = fmul fast <2 x double> [[FACTOR]], %y
+; CHECK-NEXT:    ret <2 x double> [[TMP1]]
+;
   %1 = fmul fast <2 x double> %x, %y
   %2 = fmul fast <2 x double> %y, %x
   %3 = fadd fast <2 x double> %1, %2
   ret <2 x double> %3
 }
 
+; Check x*y+y*x -> x*y*2 - minimum FMF subset version
+
+define <2 x double> @test11_reassoc(<2 x double> %x, <2 x double> %y) {
+; CHECK-LABEL: @test11_reassoc(
+; CHECK-NEXT:    [[TMP1:%.*]] = fmul reassoc <2 x double> %x, %y
+; CHECK-NEXT:    [[TMP2:%.*]] = fmul reassoc <2 x double> %x, %y
+; CHECK-NEXT:    [[TMP3:%.*]] = fadd reassoc <2 x double> [[TMP1]], [[TMP2]]
+; CHECK-NEXT:    ret <2 x double> [[TMP3]]
+;
+  %1 = fmul reassoc <2 x double> %x, %y
+  %2 = fmul reassoc <2 x double> %y, %x
+  %3 = fadd reassoc <2 x double> %1, %2
+  ret <2 x double> %3
+}
+
 ; FIXME: shifts should be converted to mul to assist further reassociation.
-define <2 x i64> @test12(<2 x i64> %b, <2 x i64> %c) {
-; CHECK-LABEL: @test12
-; CHECK-NEXT:  %mul = mul <2 x i64> %c, %b
-; CHECK-NEXT:  %shl = shl <2 x i64> %mul, <i64 5, i64 5>
-; CHECK-NEXT:  ret <2 x i64> %shl
 
+define <2 x i64> @test12(<2 x i64> %b, <2 x i64> %c) {
+; CHECK-LABEL: @test12(
+; CHECK-NEXT:    [[MUL:%.*]] = mul <2 x i64> %c, %b
+; CHECK-NEXT:    [[SHL:%.*]] = shl <2 x i64> [[MUL]], <i64 5, i64 5>
+; CHECK-NEXT:    ret <2 x i64> [[SHL]]
+;
   %mul = mul <2 x i64> %c, %b
   %shl = shl <2 x i64> %mul, <i64 5, i64 5>
   ret <2 x i64> %shl
@@ -158,12 +326,13 @@ define <2 x i64> @test12(<2 x i64> %b, <
 ; FIXME: expressions with a negative const should be canonicalized to assist
 ; further reassociation.
 ; We would expect (-5*b)+a -> a-(5*b) but only the constant operand is commuted.
-define <4 x float> @test13(<4 x float> %a, <4 x float> %b) {
-; CHECK-LABEL: @test13
-; CHECK-NEXT:  %mul = fmul fast <4 x float> %b, <float -5.000000e+00, float -5.000000e+00, float -5.000000e+00, float -5.000000e+00>
-; CHECK-NEXT:  %add = fadd fast <4 x float> %mul, %a
-; CHECK-NEXT:  ret <4 x float> %add
 
+define <4 x float> @test13(<4 x float> %a, <4 x float> %b) {
+; CHECK-LABEL: @test13(
+; CHECK-NEXT:    [[MUL:%.*]] = fmul fast <4 x float> %b, <float -5.000000e+00, float -5.000000e+00, float -5.000000e+00, float -5.000000e+00>
+; CHECK-NEXT:    [[ADD:%.*]] = fadd fast <4 x float> [[MUL]], %a
+; CHECK-NEXT:    ret <4 x float> [[ADD]]
+;
   %mul = fmul fast <4 x float> <float -5.000000e+00, float -5.000000e+00, float -5.000000e+00, float -5.000000e+00>, %b
   %add = fadd fast <4 x float> %mul, %a
   ret <4 x float> %add
@@ -171,23 +340,24 @@ define <4 x float> @test13(<4 x float> %
 
 ; Break up subtract to assist further reassociation.
 ; Check a+b-c -> a+b+-c.
-define <2 x i64> @test14(<2 x i64> %a, <2 x i64> %b, <2 x i64> %c) {
-; CHECK-LABEL: @test14
-; CHECK-NEXT: %add = add <2 x i64> %b, %a
-; CHECK-NEXT: %c.neg = sub <2 x i64> zeroinitializer, %c
-; CHECK-NEXT: %sub = add <2 x i64> %add, %c.neg
-; CHECK-NEXT: ret <2 x i64> %sub
 
+define <2 x i64> @test14(<2 x i64> %a, <2 x i64> %b, <2 x i64> %c) {
+; CHECK-LABEL: @test14(
+; CHECK-NEXT:    [[ADD:%.*]] = add <2 x i64> %b, %a
+; CHECK-NEXT:    [[C_NEG:%.*]] = sub <2 x i64> zeroinitializer, %c
+; CHECK-NEXT:    [[SUB:%.*]] = add <2 x i64> [[ADD]], [[C_NEG]]
+; CHECK-NEXT:    ret <2 x i64> [[SUB]]
+;
   %add = add <2 x i64> %b, %a
   %sub = sub <2 x i64> %add, %c
   ret <2 x i64> %sub
 }
 
 define <2 x i32> @test15(<2 x i32> %x, <2 x i32> %y) {
-; CHECK-LABEL: test15
-; CHECK-NEXT: %tmp3 = and <2 x i32> %y, %x
-; CHECK-NEXT: ret <2 x i32> %tmp3
-
+; CHECK-LABEL: @test15(
+; CHECK-NEXT:    [[TMP3:%.*]] = and <2 x i32> %y, %x
+; CHECK-NEXT:    ret <2 x i32> [[TMP3]]
+;
   %tmp1 = and <2 x i32> %x, %y
   %tmp2 = and <2 x i32> %y, %x
   %tmp3 = and <2 x i32> %tmp1, %tmp2
@@ -195,10 +365,10 @@ define <2 x i32> @test15(<2 x i32> %x, <
 }
 
 define <2 x i32> @test16(<2 x i32> %x, <2 x i32> %y) {
-; CHECK-LABEL: test16
-; CHECK-NEXT: %tmp3 = or <2 x i32> %y, %x
-; CHECK-NEXT: ret <2 x i32> %tmp3
-
+; CHECK-LABEL: @test16(
+; CHECK-NEXT:    [[TMP3:%.*]] = or <2 x i32> %y, %x
+; CHECK-NEXT:    ret <2 x i32> [[TMP3]]
+;
   %tmp1 = or <2 x i32> %x, %y
   %tmp2 = or <2 x i32> %y, %x
   %tmp3 = or <2 x i32> %tmp1, %tmp2
@@ -206,9 +376,9 @@ define <2 x i32> @test16(<2 x i32> %x, <
 }
 
 define <2 x i32> @test17(<2 x i32> %x, <2 x i32> %y) {
-; CHECK-LABEL: test17
-; CHECK-NEXT: ret <2 x i32> zeroinitializer
-
+; CHECK-LABEL: @test17(
+; CHECK-NEXT:    ret <2 x i32> zeroinitializer
+;
   %tmp1 = xor <2 x i32> %x, %y
   %tmp2 = xor <2 x i32> %y, %x
   %tmp3 = xor <2 x i32> %tmp1, %tmp2
@@ -216,10 +386,10 @@ define <2 x i32> @test17(<2 x i32> %x, <
 }
 
 define <2 x i32> @test18(<2 x i32> %x, <2 x i32> %y) {
-; CHECK-LABEL: test18
-; CHECK-NEXT: %tmp5 = xor <2 x i32> %y, %x
-; CHECK-NEXT: ret <2 x i32> %tmp5
-
+; CHECK-LABEL: @test18(
+; CHECK-NEXT:    [[TMP5:%.*]] = xor <2 x i32> %y, %x
+; CHECK-NEXT:    ret <2 x i32> [[TMP5]]
+;
   %tmp1 = xor <2 x i32> %x, %y
   %tmp2 = xor <2 x i32> %y, %x
   %tmp3 = xor <2 x i32> %x, %y




More information about the llvm-commits mailing list