implement an optimization to codegen c ? 1.0 : 2.0 as load { 2.0, 1.0 } + c*4.

[oota-llvm.git] / test / CodeGen / X86 / 2009-03-07-FPConstSelect.ll

diff --git a/test/CodeGen/X86/2009-03-07-FPConstSelect.ll b/test/CodeGen/X86/2009-03-07-FPConstSelect.ll
new file mode 100644 (file)
index 0000000..28302c0
--- /dev/null
+++ b/test/CodeGen/X86/2009-03-07-FPConstSelect.ll
@@ -0,0 +1,12 @@
+; RUN: llvm-as < %s | llc -march=x86 -mcpu=yonah | not grep xmm
+; This should do a single load into the fp stack for the return, not diddle with xmm registers.
+
+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-darwin7"
+
+define float @f(i32 %x) nounwind readnone {
+entry:
+       %0 = icmp eq i32 %x, 0          ; <i1> [#uses=1]
+       %iftmp.0.0 = select i1 %0, float 4.200000e+01, float 2.300000e+01
+       ret float %iftmp.0.0
+}