From 2efbbb38ba7b9601202f2271301f07195dea8959 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Wed, 26 Nov 2008 00:26:16 +0000 Subject: 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 --- test/CodeGen/X86/2008-10-16-SpillerBug.ll | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'test/CodeGen/X86/2008-10-16-SpillerBug.ll') 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 } -- cgit v1.1