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authorEvan Cheng <evan.cheng@apple.com>2009-06-20 04:34:51 +0000
committerEvan Cheng <evan.cheng@apple.com>2009-06-20 04:34:51 +0000
commit694f6c81e885818840d374c855cd0c91ed3f2f15 (patch)
treeeec47a17634b804aee2afec4fea6570cc4454cbb /test/CodeGen/ARM/2009-06-19-RegScavengerAssert.ll
parente9fe6c7729c0637acadd7564ae8d14c5c9300f89 (diff)
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Fix PR4419: handle defs of partial uses.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73816 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/ARM/2009-06-19-RegScavengerAssert.ll')
-rw-r--r--test/CodeGen/ARM/2009-06-19-RegScavengerAssert.ll30
1 files changed, 30 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/2009-06-19-RegScavengerAssert.ll b/test/CodeGen/ARM/2009-06-19-RegScavengerAssert.ll
new file mode 100644
index 0000000000..cbe2385ab2
--- /dev/null
+++ b/test/CodeGen/ARM/2009-06-19-RegScavengerAssert.ll
@@ -0,0 +1,30 @@
+; RUN: llvm-as < %s | llc -mtriple=armv6-eabi -mattr=+vfp2 -float-abi=hard
+; PR4419
+
+define float @__ieee754_acosf(float %x) nounwind {
+entry:
+ br i1 undef, label %bb, label %bb4
+
+bb: ; preds = %entry
+ ret float undef
+
+bb4: ; preds = %entry
+ br i1 undef, label %bb5, label %bb6
+
+bb5: ; preds = %bb4
+ ret float undef
+
+bb6: ; preds = %bb4
+ br i1 undef, label %bb11, label %bb12
+
+bb11: ; preds = %bb6
+ %0 = tail call float @__ieee754_sqrtf(float undef) nounwind ; <float> [#uses=1]
+ %1 = fmul float %0, -2.000000e+00 ; <float> [#uses=1]
+ %2 = fadd float %1, 0x400921FB40000000 ; <float> [#uses=1]
+ ret float %2
+
+bb12: ; preds = %bb6
+ ret float undef
+}
+
+declare float @__ieee754_sqrtf(float)