[PowerPC] Support the (old) cntlz instruction alias

[oota-llvm.git] / lib / Target / X86 / X86InstrCompiler.td

diff --git a/lib/Target/X86/X86InstrCompiler.td b/lib/Target/X86/X86InstrCompiler.td
index be0e4b790a2b57c3841db799df78f1a8c51eb476..3feae6d31fddf43348296dfbd56e930022d58928 100644 (file)
--- a/lib/Target/X86/X86InstrCompiler.td
+++ b/lib/Target/X86/X86InstrCompiler.td
@@ -43,15 +43,18 @@ let hasSideEffects = 0, isNotDuplicable = 1, Uses = [ESP] in
 // Pessimistically assume ADJCALLSTACKDOWN / ADJCALLSTACKUP will become
 // sub / add which can clobber EFLAGS.
 let Defs = [ESP, EFLAGS], Uses = [ESP] in {
-def ADJCALLSTACKDOWN32 : I<0, Pseudo, (outs), (ins i32imm:$amt),
+def ADJCALLSTACKDOWN32 : I<0, Pseudo, (outs), (ins i32imm:$amt1, i32imm:$amt2),
                            "#ADJCALLSTACKDOWN",
-                           [(X86callseq_start timm:$amt)]>,
+                           []>,
                           Requires<[NotLP64]>;
 def ADJCALLSTACKUP32   : I<0, Pseudo, (outs), (ins i32imm:$amt1, i32imm:$amt2),
                            "#ADJCALLSTACKUP",
                            [(X86callseq_end timm:$amt1, timm:$amt2)]>,
                           Requires<[NotLP64]>;
 }
+def : Pat<(X86callseq_start timm:$amt1),
+          (ADJCALLSTACKDOWN32 i32imm:$amt1, 0)>, Requires<[NotLP64]>;
+
 
 // ADJCALLSTACKDOWN/UP implicitly use/def RSP because they may be expanded into
 // a stack adjustment and the codegen must know that they may modify the stack
@@ -59,16 +62,17 @@ def ADJCALLSTACKUP32   : I<0, Pseudo, (outs), (ins i32imm:$amt1, i32imm:$amt2),
 // Pessimistically assume ADJCALLSTACKDOWN / ADJCALLSTACKUP will become
 // sub / add which can clobber EFLAGS.
 let Defs = [RSP, EFLAGS], Uses = [RSP] in {
-def ADJCALLSTACKDOWN64 : I<0, Pseudo, (outs), (ins i32imm:$amt),
+def ADJCALLSTACKDOWN64 : I<0, Pseudo, (outs), (ins i32imm:$amt1, i32imm:$amt2),
                            "#ADJCALLSTACKDOWN",
-                           [(X86callseq_start timm:$amt)]>,
+                           []>,
                           Requires<[IsLP64]>;
 def ADJCALLSTACKUP64   : I<0, Pseudo, (outs), (ins i32imm:$amt1, i32imm:$amt2),
                            "#ADJCALLSTACKUP",
                            [(X86callseq_end timm:$amt1, timm:$amt2)]>,
                           Requires<[IsLP64]>;
 }
-
+def : Pat<(X86callseq_start timm:$amt1),
+          (ADJCALLSTACKDOWN64 i32imm:$amt1, 0)>, Requires<[IsLP64]>;
 
 
 // x86-64 va_start lowering magic.