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| author | Nick Lewycky <nicholas@mxc.ca> | 2010-12-30 22:10:49 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2010-12-30 22:10:49 +0000 |
| commit | c00210cef28b48b17408eb79e94691779da9d474 (patch) | |
| tree | 77d1977f63a5ea76ea6ceab7f6a078e47ec21e4e | |
| parent | d34f19f7bacd9476c0fc55f95f7baf1011a69191 (diff) | |
| download | llvm-c00210cef28b48b17408eb79e94691779da9d474.tar.gz llvm-c00210cef28b48b17408eb79e94691779da9d474.tar.bz2 llvm-c00210cef28b48b17408eb79e94691779da9d474.tar.xz | |
Add another non-commutable instruction that gas accepts commuted forms for.
Fixes PR8861.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122641 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.td | 7 | ||||
| -rw-r--r-- | test/MC/X86/x86-64.s | 4 |
2 files changed, 8 insertions, 3 deletions
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td index 761e9ccb6c..f9c0a7bbfb 100644 --- a/lib/Target/X86/X86InstrInfo.td +++ b/lib/Target/X86/X86InstrInfo.td @@ -1465,14 +1465,15 @@ defm : FpUnaryAlias<"fucompi", UCOM_FIPr>; // Handle "f{mulp,addp} st(0), $op" the same as "f{mulp,addp} $op", since they -// commute. We also allow fdivrp/fsubrp even though they don't commute, solely -// because gas supports it. +// commute. We also allow fdiv[r]p/fsubrp even though they don't commute, +// solely because gas supports it. def : InstAlias<"faddp %st(0), $op", (ADD_FPrST0 RST:$op)>; def : InstAlias<"fmulp %st(0), $op", (MUL_FPrST0 RST:$op)>; def : InstAlias<"fsubrp %st(0), $op", (SUB_FPrST0 RST:$op)>; +def : InstAlias<"fdivp %st(0), $op", (DIVR_FPrST0 RST:$op)>; def : InstAlias<"fdivrp %st(0), $op", (DIV_FPrST0 RST:$op)>; -// We accepts "fnstsw %eax" even though it only writes %ax. +// We accept "fnstsw %eax" even though it only writes %ax. def : InstAlias<"fnstsw %eax", (FNSTSW8r)>; def : InstAlias<"fnstsw %al" , (FNSTSW8r)>; def : InstAlias<"fnstsw" , (FNSTSW8r)>; diff --git a/test/MC/X86/x86-64.s b/test/MC/X86/x86-64.s index 5375919d55..2eb2aded6a 100644 --- a/test/MC/X86/x86-64.s +++ b/test/MC/X86/x86-64.s @@ -504,6 +504,10 @@ fdivrp %st(1), %st(0) // CHECK: encoding: [0xde,0xf9] fsubrp %ST(0), %ST(1) // CHECK: encoding: [0xde,0xe9] fsubrp %ST(1), %ST(0) // CHECK: encoding: [0xde,0xe9] +// also PR8861 +fdivp %st(0), %st(1) // CHECK: encoding: [0xde,0xf1] +fdivp %st(1), %st(0) // CHECK: encoding: [0xde,0xf1] + movl foo(%rip), %eax // CHECK: movl foo(%rip), %eax |