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authorEric Christopher <echristo@apple.com>2011-04-12 23:23:14 +0000
committerEric Christopher <echristo@apple.com>2011-04-12 23:23:14 +0000
commitd829f43c068e73c2f7d7637a65a69174986f8154 (patch)
tree57fb820ee6f2574b93750d6f34d7ab875ef7ce2a /llvm/test/CodeGen/ARM/2011-04-12-FastRegAlloc.ll
parent0e821f46736a9a8a273a3febbbfb0a84be8eedaa (diff)
downloadbcm5719-llvm-d829f43c068e73c2f7d7637a65a69174986f8154.tar.gz
bcm5719-llvm-d829f43c068e73c2f7d7637a65a69174986f8154.zip
Fix a bug where we were counting the alias sets as completely used
registers for fast allocation. Fixes rdar://9207598 llvm-svn: 129408
Diffstat (limited to 'llvm/test/CodeGen/ARM/2011-04-12-FastRegAlloc.ll')
-rw-r--r--llvm/test/CodeGen/ARM/2011-04-12-FastRegAlloc.ll15
1 files changed, 15 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/ARM/2011-04-12-FastRegAlloc.ll b/llvm/test/CodeGen/ARM/2011-04-12-FastRegAlloc.ll
new file mode 100644
index 00000000000..eb23de0b971
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/2011-04-12-FastRegAlloc.ll
@@ -0,0 +1,15 @@
+; RUN: llc < %s -O0 -verify-machineinstrs -regalloc=fast
+; Previously we'd crash as out of registers on this input by clobbering all of
+; the aliases.
+target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:64-v128:32:128-a0:0:32-n32"
+target triple = "thumbv7-apple-darwin10.0.0"
+
+define void @_Z8TestCasev() nounwind ssp {
+entry:
+ %a = alloca float, align 4
+ %tmp = load float* %a, align 4
+ call void asm sideeffect "", "w,~{s0},~{s16}"(float %tmp) nounwind, !srcloc !0
+ ret void
+}
+
+!0 = metadata !{i32 109}
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