Verifier: Call verifyModule() from llc and opt

[oota-llvm.git] / test / Transforms / InstCombine / sqrt.ll

diff --git a/test/Transforms/InstCombine/sqrt.ll b/test/Transforms/InstCombine/sqrt.ll
index 65053820482ffb55d40a6cf9f3d22fc764348c7e..24c2e00a08d7232fcab2766bc72cdadf407a3dbf 100644 (file)
--- a/test/Transforms/InstCombine/sqrt.ll
+++ b/test/Transforms/InstCombine/sqrt.ll
@@ -1,7 +1,23 @@
-; RUN: opt -S -instcombine %s | FileCheck %s
+; RUN: opt -S -instcombine < %s | FileCheck %s
 
-define float @foo(float %x) nounwind readnone ssp {
+define float @test1(float %x) nounwind readnone ssp {
 entry:
+; CHECK-LABEL: @test1(
+; CHECK-NOT: fpext
+; CHECK-NOT: sqrt(
+; CHECK: sqrtf(
+; CHECK-NOT: fptrunc
+  %conv = fpext float %x to double                ; <double> [#uses=1]
+  %call = tail call double @sqrt(double %conv) readnone nounwind ; <double> [#uses=1]
+  %conv1 = fptrunc double %call to float          ; <float> [#uses=1]
+; CHECK: ret float
+  ret float %conv1
+}
+
+; PR8096
+define float @test2(float %x) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: @test2(
 ; CHECK-NOT: fpext
 ; CHECK-NOT: sqrt(
 ; CHECK: sqrtf(
@@ -13,4 +29,26 @@ entry:
   ret float %conv1
 }
 
+; rdar://9763193
+; Can't fold (fptrunc (sqrt (fpext x))) -> (sqrtf x) since there is another
+; use of sqrt result.
+define float @test3(float* %v) nounwind uwtable ssp {
+entry:
+; CHECK-LABEL: @test3(
+; CHECK: sqrt(
+; CHECK-NOT: sqrtf(
+; CHECK: fptrunc
+  %arrayidx13 = getelementptr inbounds float, float* %v, i64 2
+  %tmp14 = load float, float* %arrayidx13
+  %mul18 = fmul float %tmp14, %tmp14
+  %add19 = fadd float undef, %mul18
+  %conv = fpext float %add19 to double
+  %call34 = call double @sqrt(double %conv) readnone
+  %call36 = call i32 (double)* @foo(double %call34) nounwind
+  %conv38 = fptrunc double %call34 to float
+  ret float %conv38
+}
+
+declare i32 @foo(double)
+
 declare double @sqrt(double) readnone