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authorDan Gohman <gohman@apple.com>2009-01-20 01:06:45 +0000
committerDan Gohman <gohman@apple.com>2009-01-20 01:06:45 +0000
commitf5add58549fe8ecd9a15cbb7c230282bd693516b (patch)
tree24b5e68ebdff5feaf033ab442492604dcb224113 /test/CodeGen
parentc2997f4a34eb544ca6ec85a5c9190feb998fc7a8 (diff)
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Fix a dagcombine to not generate loads of non-round integer types,
as its comment says, even in the case where it will be generating extending loads. This fixes PR3216. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62557 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
-rw-r--r--test/CodeGen/X86/pr3216.ll14
1 files changed, 14 insertions, 0 deletions
diff --git a/test/CodeGen/X86/pr3216.ll b/test/CodeGen/X86/pr3216.ll
new file mode 100644
index 0000000..fdc814e
--- /dev/null
+++ b/test/CodeGen/X86/pr3216.ll
@@ -0,0 +1,14 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep {sar. \$5}
+
+@foo = global i8 127
+
+define i32 @main() nounwind {
+entry:
+ %tmp = load i8* @foo
+ %bf.lo = lshr i8 %tmp, 5
+ %bf.lo.cleared = and i8 %bf.lo, 7
+ %0 = shl i8 %bf.lo.cleared, 5
+ %bf.val.sext = ashr i8 %0, 5
+ %conv = sext i8 %bf.val.sext to i32
+ ret i32 %conv
+}