From 1ea55cf8166d46b1518b83dce5c14f1e175ac03c Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Thu, 17 Jan 2008 19:59:44 +0000 Subject: This commit changes: 1. Legalize now always promotes truncstore of i1 to i8. 2. Remove patterns and gunk related to truncstore i1 from targets. 3. Rename the StoreXAction stuff to TruncStoreAction in TLI. 4. Make the TLI TruncStoreAction table a 2d table to handle from/to conversions. 5. Mark a wide variety of invalid truncstores as such in various targets, e.g. X86 currently doesn't support truncstore of any of its integer types. 6. Add legalize support for truncstores with invalid value input types. 7. Add a dag combine transform to turn store(truncate) into truncstore when safe. The later allows us to compile CodeGen/X86/storetrunc-fp.ll to: _foo: fldt 20(%esp) fldt 4(%esp) faddp %st(1) movl 36(%esp), %eax fstps (%eax) ret instead of: _foo: subl $4, %esp fldt 24(%esp) fldt 8(%esp) faddp %st(1) fstps (%esp) movl 40(%esp), %eax movss (%esp), %xmm0 movss %xmm0, (%eax) addl $4, %esp ret llvm-svn: 46140 --- llvm/test/CodeGen/X86/storetrunc-fp.ll | 8 ++++++++ 1 file changed, 8 insertions(+) create mode 100644 llvm/test/CodeGen/X86/storetrunc-fp.ll (limited to 'llvm/test/CodeGen/X86/storetrunc-fp.ll') diff --git a/llvm/test/CodeGen/X86/storetrunc-fp.ll b/llvm/test/CodeGen/X86/storetrunc-fp.ll new file mode 100644 index 00000000000..655cbd68b37 --- /dev/null +++ b/llvm/test/CodeGen/X86/storetrunc-fp.ll @@ -0,0 +1,8 @@ +; RUN: llvm-as < %s | llc -march=x86 | not grep flds + +define void @foo(x86_fp80 %a, x86_fp80 %b, float* %fp) { + %c = add x86_fp80 %a, %b + %d = fptrunc x86_fp80 %c to float + store float %d, float* %fp + ret void +} -- cgit v1.2.3