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authorChris Lattner <sabre@nondot.org>2008-11-26 00:26:16 +0000
committerChris Lattner <sabre@nondot.org>2008-11-26 00:26:16 +0000
commit4c854315d57fae256e1ca853b48ca6ca50216aa5 (patch)
treea5cfb199a202b4901c74c9c4823cf3e01aa9ad22 /test/CodeGen/X86/2008-10-16-SpillerBug.ll
parent31e241b2509c66d494c7b2f9c3f80753ab242e5d (diff)
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Teach CodeGenPrepare to look through Bitcast instructions when attempting to
optimize addressing modes. This allows us to optimize things like isel-sink2.ll into: movl 4(%esp), %eax cmpb $0, 4(%eax) jne LBB1_2 ## F LBB1_1: ## TB movl $4, %eax ret LBB1_2: ## F movzbl 7(%eax), %eax ret instead of: _test: movl 4(%esp), %eax cmpb $0, 4(%eax) leal 4(%eax), %eax jne LBB1_2 ## F LBB1_1: ## TB movl $4, %eax ret LBB1_2: ## F movzbl 3(%eax), %eax ret This shrinks (e.g.) 403.gcc from 1133510 to 1128345 lines of .s. Note that the 2008-10-16-SpillerBug.ll testcase is dubious at best, I doubt it is really testing what it thinks it is. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60068 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/2008-10-16-SpillerBug.ll')
-rw-r--r--test/CodeGen/X86/2008-10-16-SpillerBug.ll2
1 files changed, 1 insertions, 1 deletions
diff --git a/test/CodeGen/X86/2008-10-16-SpillerBug.ll b/test/CodeGen/X86/2008-10-16-SpillerBug.ll
index a66073d..5caad4f 100644
--- a/test/CodeGen/X86/2008-10-16-SpillerBug.ll
+++ b/test/CodeGen/X86/2008-10-16-SpillerBug.ll
@@ -1,4 +1,4 @@
-; RUN: llvm-as < %s | llc -relocation-model=pic -disable-fp-elim -mtriple=i386-apple-darwin | grep and | grep 7 | grep ebp
+; RUN: llvm-as < %s | llc -relocation-model=pic -disable-fp-elim -mtriple=i386-apple-darwin | grep {andl.*7.*ecx}
%struct.XXDActiveTextureTargets = type { i64, i64, i64, i64, i64, i64 }
%struct.XXDAlphaTest = type { float, i16, i8, i8 }