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it's pointed out that R11 can be used for magic things, and doing things just for 64-bit registers is silly. Just optimize 3 more.

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llvm-svn: 157699
This commit is contained in:
Chris Lattner 2012-05-30 18:08:02 +00:00
parent 505bcf70a0
commit 1d39403e7b
3 changed files with 17 additions and 18 deletions
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2
lib/Target/X86/X86CallingConv.td
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@ -35,7 +35,7 @@ def RetCC_X86Common : CallingConv<[
CCIfType<[i8] , CCAssignToReg<[AL, DL, CL]>>, CCIfType<[i8] , CCAssignToReg<[AL, DL, CL]>>,
CCIfType<[i16], CCAssignToReg<[AX, DX, CX]>>, CCIfType<[i16], CCAssignToReg<[AX, DX, CX]>>,
CCIfType<[i32], CCAssignToReg<[EAX, EDX, ECX]>>, CCIfType<[i32], CCAssignToReg<[EAX, EDX, ECX]>>,
CCIfType<[i64], CCAssignToReg<[RAX, RDX, RCX, R11]>>, CCIfType<[i64], CCAssignToReg<[RAX, RDX, RCX]>>,
// Vector types are returned in XMM0 and XMM1, when they fit. XMM2 and XMM3 // Vector types are returned in XMM0 and XMM1, when they fit. XMM2 and XMM3
// can only be used by ABI non-compliant code. If the target doesn't have XMM // can only be used by ABI non-compliant code. If the target doesn't have XMM

17
test/CodeGen/X86/pass-four.ll
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@ -1,17 +0,0 @@
; RUN: llc < %s | FileCheck %s
target datalayout = "e-p:64:64:64-S128-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f16:16:16-f32:32:32-f64:64:64-f128:128:128-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin11.3.0"
define { i8*, i64, i64*, i64 } @copy_4(i8* %a, i64 %b, i64* %c, i64 %d) nounwind {
entry:
%0 = insertvalue { i8*, i64, i64*, i64 } undef, i8* %a, 0
%1 = insertvalue { i8*, i64, i64*, i64 } %0, i64 %b, 1
%2 = insertvalue { i8*, i64, i64*, i64 } %1, i64* %c, 2
%3 = insertvalue { i8*, i64, i64*, i64 } %2, i64 %d, 3
ret { i8*, i64, i64*, i64 } %3
}
; CHECK: copy_4:
; CHECK-NOT: (%rdi)
; CHECK: ret

16
test/CodeGen/X86/pass-three.ll Normal file
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@ -0,0 +1,16 @@
; RUN: llc < %s | FileCheck %s
target datalayout = "e-p:64:64:64-S128-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f16:16:16-f32:32:32-f64:64:64-f128:128:128-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin11.3.0"
define { i8*, i64, i64* } @copy_3(i8* %a, i64 %b, i64* %c) nounwind {
entry:
%0 = insertvalue { i8*, i64, i64* } undef, i8* %a, 0
%1 = insertvalue { i8*, i64, i64* } %0, i64 %b, 1
%2 = insertvalue { i8*, i64, i64* } %1, i64* %c, 2
ret { i8*, i64, i64* } %2
}
; CHECK: copy_3:
; CHECK-NOT: (%rdi)
; CHECK: ret