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| author | Craig Topper <craig.topper@gmail.com> | 2013-07-23 00:03:33 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2013-07-23 00:03:33 +0000 |
| commit | 19159c1f4c36db2209dae3c4486bd7784acb40cf (patch) | |
| tree | 2e21a4c891c555db2898ba9510cc8ef17fe65a61 /lib/Target/X86/X86InstrInfo.td | |
| parent | a1ac7ede0c39fff1612311afab0039b74eed59e1 (diff) | |
| download | external_llvm-19159c1f4c36db2209dae3c4486bd7784acb40cf.zip external_llvm-19159c1f4c36db2209dae3c4486bd7784acb40cf.tar.gz external_llvm-19159c1f4c36db2209dae3c4486bd7784acb40cf.tar.bz2 | |
Suppress argumentless aliases for some x86 FP operations from being used by the asm writer. Prefer to use the explicit %st(1) form.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186897 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86InstrInfo.td')
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.td | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td index 898a719..9eca151 100644 --- a/lib/Target/X86/X86InstrInfo.td +++ b/lib/Target/X86/X86InstrInfo.td @@ -2013,20 +2013,20 @@ def : InstAlias<"idiv{q}\t{$src, %rax|RAX, $src}", (IDIV64m i64mem:$src)>; // Various unary fpstack operations default to operating on on ST1. // For example, "fxch" -> "fxch %st(1)" def : InstAlias<"faddp", (ADD_FPrST0 ST1), 0>; -def : InstAlias<"fsubp", (SUBR_FPrST0 ST1)>; -def : InstAlias<"fsubrp", (SUB_FPrST0 ST1)>; -def : InstAlias<"fmulp", (MUL_FPrST0 ST1)>; -def : InstAlias<"fdivp", (DIVR_FPrST0 ST1)>; -def : InstAlias<"fdivrp", (DIV_FPrST0 ST1)>; -def : InstAlias<"fxch", (XCH_F ST1)>; -def : InstAlias<"fcom", (COM_FST0r ST1)>; -def : InstAlias<"fcomp", (COMP_FST0r ST1)>; -def : InstAlias<"fcomi", (COM_FIr ST1)>; -def : InstAlias<"fcompi", (COM_FIPr ST1)>; -def : InstAlias<"fucom", (UCOM_Fr ST1)>; -def : InstAlias<"fucomp", (UCOM_FPr ST1)>; -def : InstAlias<"fucomi", (UCOM_FIr ST1)>; -def : InstAlias<"fucompi", (UCOM_FIPr ST1)>; +def : InstAlias<"fsubp", (SUBR_FPrST0 ST1), 0>; +def : InstAlias<"fsubrp", (SUB_FPrST0 ST1), 0>; +def : InstAlias<"fmulp", (MUL_FPrST0 ST1), 0>; +def : InstAlias<"fdivp", (DIVR_FPrST0 ST1), 0>; +def : InstAlias<"fdivrp", (DIV_FPrST0 ST1), 0>; +def : InstAlias<"fxch", (XCH_F ST1), 0>; +def : InstAlias<"fcom", (COM_FST0r ST1), 0>; +def : InstAlias<"fcomp", (COMP_FST0r ST1), 0>; +def : InstAlias<"fcomi", (COM_FIr ST1), 0>; +def : InstAlias<"fcompi", (COM_FIPr ST1), 0>; +def : InstAlias<"fucom", (UCOM_Fr ST1), 0>; +def : InstAlias<"fucomp", (UCOM_FPr ST1), 0>; +def : InstAlias<"fucomi", (UCOM_FIr ST1), 0>; +def : InstAlias<"fucompi", (UCOM_FIPr ST1), 0>; // Handle fmul/fadd/fsub/fdiv instructions with explicitly written st(0) op. // For example, "fadd %st(4), %st(0)" -> "fadd %st(4)". We also disambiguate |