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-rw-r--r--lib/Transforms/InstCombine/InstCombineAddSub.cpp43
-rw-r--r--lib/Transforms/InstCombine/InstCombineMulDivRem.cpp29
-rw-r--r--test/Transforms/InstCombine/add4.ll53
3 files changed, 73 insertions, 52 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineAddSub.cpp b/lib/Transforms/InstCombine/InstCombineAddSub.cpp
index 686978ac985..fecbd5c3010 100644
--- a/lib/Transforms/InstCombine/InstCombineAddSub.cpp
+++ b/lib/Transforms/InstCombine/InstCombineAddSub.cpp
@@ -1263,49 +1263,6 @@ Instruction *InstCombiner::visitFAdd(BinaryOperator &I) {
}
}
- // A * (1 - uitofp i1 C) + B * (uitofp i1 C) -> select C, B, A
- {
- if (I.hasNoNaNs() && I.hasNoInfs() && I.hasNoSignedZeros()) {
- Value *M1L, *M1R, *M2L, *M2R;
- if (match(LHS, m_FMul(m_Value(M1L), m_Value(M1R))) &&
- match(RHS, m_FMul(m_Value(M2L), m_Value(M2R)))) {
-
- Value *A, *B, *C1, *C2;
- if (!match(M1R, m_FSub(m_FPOne(), m_UIToFp(m_Value(C1)))))
- std::swap(M1L, M1R);
- if (!match(M2R, m_UIToFp(m_Value(C2))))
- std::swap(M2L, M2R);
-
- if (match(M1R, m_FSub(m_FPOne(), m_UIToFp(m_Value(C1)))) &&
- match(M2R, m_UIToFp(m_Value(C2))) &&
- C2->getType()->isIntegerTy(1) &&
- C1 == C2) {
- A = M1L;
- B = M2L;
- return SelectInst::Create(C1, B, A);
- }
-
- std::swap(M1L, M2L);
- std::swap(M1R, M2R);
-
- if (!match(M1R, m_FSub(m_FPOne(), m_UIToFp(m_Value(C1)))))
- std::swap(M1L, M1R);
- if (!match(M2R, m_UIToFp(m_Value(C2))))
- std::swap(M2L, M2R);
-
- if (match(M1R, m_FSub(m_FPOne(), m_UIToFp(m_Value(C1)))) &&
- match(M2R, m_UIToFp(m_Value(C2))) &&
- C2->getType()->isIntegerTy(1) &&
- C1 == C2) {
- A = M1L;
- B = M2L;
- return SelectInst::Create(C1, B, A);
- }
- }
- }
- }
-
-
if (I.hasUnsafeAlgebra()) {
if (Value *V = FAddCombine(Builder).simplify(&I))
return ReplaceInstUsesWith(I, V);
diff --git a/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp b/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
index eac24c63451..c3621af638b 100644
--- a/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
+++ b/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
@@ -556,6 +556,35 @@ Instruction *InstCombiner::visitFMul(BinaryOperator &I) {
}
}
+ // B * (uitofp i1 C) -> select C, B, 0
+ if (I.hasNoNaNs() && I.hasNoInfs() && I.hasNoSignedZeros()) {
+ Value *LHS = Op0, *RHS = Op1;
+ Value *B, *C;
+ if (!match(RHS, m_UIToFp(m_Value(C))))
+ std::swap(LHS, RHS);
+
+ if (match(RHS, m_UIToFp(m_Value(C))) && C->getType()->isIntegerTy(1)) {
+ B = LHS;
+ Value *Zero = ConstantFP::getNegativeZero(B->getType());
+ return SelectInst::Create(C, B, Zero);
+ }
+ }
+
+ // A * (1 - uitofp i1 C) -> select C, 0, A
+ if (I.hasNoNaNs() && I.hasNoInfs() && I.hasNoSignedZeros()) {
+ Value *LHS = Op0, *RHS = Op1;
+ Value *A, *C;
+ if (!match(RHS, m_FSub(m_FPOne(), m_UIToFp(m_Value(C)))))
+ std::swap(LHS, RHS);
+
+ if (match(RHS, m_FSub(m_FPOne(), m_UIToFp(m_Value(C)))) &&
+ C->getType()->isIntegerTy(1)) {
+ A = LHS;
+ Value *Zero = ConstantFP::getNegativeZero(A->getType());
+ return SelectInst::Create(C, Zero, A);
+ }
+ }
+
if (!isa<Constant>(Op1))
std::swap(Opnd0, Opnd1);
else
diff --git a/test/Transforms/InstCombine/add4.ll b/test/Transforms/InstCombine/add4.ll
index 898ba962a44..208c7f03200 100644
--- a/test/Transforms/InstCombine/add4.ll
+++ b/test/Transforms/InstCombine/add4.ll
@@ -1,22 +1,39 @@
; RUN: opt < %s -instcombine -S | FileCheck %s
-;; Target triple for gep raising case below.
-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 = "i686-apple-darwin8"
-
define float @test1(float %A, float %B, i1 %C) {
EntryBlock:
+ ;; A*(1 - uitofp i1 C) -> select C, 0, A
+ %cf = uitofp i1 %C to float
+ %mc = fsub float 1.000000e+00, %cf
+ %p1 = fmul fast float %A, %mc
+ ret float %p1
+; CHECK-LABEL: @test1(
+; CHECK: select i1 %C, float -0.000000e+00, float %A
+}
+
+define float @test2(float %A, float %B, i1 %C) {
+EntryBlock:
+ ;; B*(uitofp i1 C) -> select C, B, 0
+ %cf = uitofp i1 %C to float
+ %p2 = fmul fast float %B, %cf
+ ret float %p2
+; CHECK-LABEL: @test2(
+; CHECK: select i1 %C, float %B, float -0.000000e+00
+}
+
+define float @test3(float %A, float %B, i1 %C) {
+EntryBlock:
;; select C, 0, B + select C, A, 0 -> select C, A, B
%cf = uitofp i1 %C to float
%s1 = select i1 %C, float 0.000000e+00, float %B
%s2 = select i1 %C, float %A, float 0.000000e+00
%sum = fadd fast float %s1, %s2
ret float %sum
-; CHECK-LABEL: @test1(
+; CHECK-LABEL: @test3(
; CHECK: select i1 %C, float %A, float %B
}
-define float @test2(float %A, float %B, i1 %C) {
+define float @test4(float %A, float %B, i1 %C) {
EntryBlock:
;; B*(uitofp i1 C) + A*(1 - uitofp i1 C) -> select C, A, B
%cf = uitofp i1 %C to float
@@ -25,11 +42,11 @@ EntryBlock:
%p2 = fmul fast float %B, %cf
%s1 = fadd fast float %p2, %p1
ret float %s1
-; CHECK-LABEL: @test2(
+; CHECK-LABEL: @test4(
; CHECK: select i1 %C, float %B, float %A
}
-define float @test3(float %A, float %B, i1 %C) {
+define float @test5(float %A, float %B, i1 %C) {
EntryBlock:
;; A*(1 - uitofp i1 C) + B*(uitofp i1 C) -> select C, A, B
%cf = uitofp i1 %C to float
@@ -38,7 +55,25 @@ EntryBlock:
%p2 = fmul fast float %B, %cf
%s1 = fadd fast float %p1, %p2
ret float %s1
-; CHECK-LABEL: @test3(
+; CHECK-LABEL: @test5(
; CHECK: select i1 %C, float %B, float %A
}
+; PR15952
+define float @test6(float %A, float %B, i32 %C) {
+ %cf = uitofp i32 %C to float
+ %mc = fsub float 1.000000e+00, %cf
+ %p1 = fmul fast float %A, %mc
+ ret float %p1
+; CHECK-LABEL: @test6(
+; CHECK: uitofp
+}
+
+define float @test7(float %A, float %B, i32 %C) {
+ %cf = uitofp i32 %C to float
+ %p2 = fmul fast float %B, %cf
+ ret float %p2
+; CHECK-LABEL: @test7(
+; CHECK: uitofp
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-15 11:52:52 +0000