From a98ce503b958821fd2530aad585c21e730695a9e Mon Sep 17 00:00:00 2001
From: Stephen Lin <stephenwlin@gmail.com>
Date: Sat, 20 Jul 2013 07:13:13 +0000
Subject: InstCombine: call FoldOpIntoSelect for all floating binops, not just
 fmul

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186759 91177308-0d34-0410-b5e6-96231b3b80d8
---
 .../InstCombine/fold-fops-into-selects.ll          | 71 ++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 test/Transforms/InstCombine/fold-fops-into-selects.ll

(limited to 'test/Transforms/InstCombine/fold-fops-into-selects.ll')

diff --git a/test/Transforms/InstCombine/fold-fops-into-selects.ll b/test/Transforms/InstCombine/fold-fops-into-selects.ll
new file mode 100644
index 0000000..07aebb1
--- /dev/null
+++ b/test/Transforms/InstCombine/fold-fops-into-selects.ll
@@ -0,0 +1,71 @@
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+define float @test1(i1 %A) {
+EntryBlock:
+  %cf = select i1 %A, float 1.000000e+00, float 0.000000e+00
+  %op = fsub float 1.000000e+00, %cf
+  ret float %op
+; CHECK-LABEL: @test1(
+; CHECK: select i1 %A, float 0.000000e+00, float 1.000000e+00
+}
+
+define float @test2(i1 %A, float %B) {
+EntryBlock:
+  %cf = select i1 %A, float 1.000000e+00, float %B
+  %op = fadd float 2.000000e+00, %cf
+  ret float %op
+; CHECK-LABEL: @test2(
+; CHECK: [[OP:%.*]] = fadd float %B, 2.000000e+00
+; CHECK: select i1 %A, float 3.000000e+00, float [[OP]]
+}
+
+define float @test3(i1 %A, float %B) {
+EntryBlock:
+  %cf = select i1 %A, float 1.000000e+00, float %B
+  %op = fsub float 2.000000e+00, %cf
+  ret float %op
+; CHECK-LABEL: @test3(
+; CHECK: [[OP:%.*]] = fsub float 2.000000e+00, %B
+; CHECK: select i1 %A, float 1.000000e+00, float [[OP]]
+}
+
+define float @test4(i1 %A, float %B) {
+EntryBlock:
+  %cf = select i1 %A, float 1.000000e+00, float %B
+  %op = fmul float 2.000000e+00, %cf
+  ret float %op
+; CHECK-LABEL: @test4(
+; CHECK: [[OP:%.*]] = fmul float %B, 2.000000e+00
+; CHECK: select i1 %A, float 2.000000e+00, float [[OP]]
+}
+
+define float @test5(i1 %A, float %B) {
+EntryBlock:
+  %cf = select i1 %A, float 1.000000e+00, float %B
+  %op = fdiv float 2.000000e+00, %cf
+  ret float %op
+; CHECK-LABEL: @test5(
+; CHECK: [[OP:%.*]] = fdiv float 2.000000e+00, %B
+; CHECK: select i1 %A, float 2.000000e+00, float [[OP]]
+}
+
+define float @test6(i1 %A, float %B) {
+EntryBlock:
+  %cf = select i1 %A, float 1.000000e+00, float %B
+  %op = fdiv float %cf, 2.000000e+00
+  ret float %op
+; CHECK-LABEL: @test6(
+; CHECK: [[OP:%.*]] = fmul float %B, 5.000000e-01
+; CHECK: select i1 %A, float 5.000000e-01, float [[OP]]
+}
+
+define float @test7(i1 %A, float %B) {
+EntryBlock:
+  %cf = select i1 %A, float 1.000000e+00, float %B
+  %op = fdiv float %cf, 3.000000e+00
+  ret float %op
+; CHECK-LABEL: @test7(
+; CHECK: [[OP:%.*]] = fdiv float %B, 3.000000e+00
+; CHECK: select i1 %A, float 0x3FD5555560000000, float [[OP]]
+}
+
-- 
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