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[X86][MS-InlineAsm] Extended support for variables / identifiers on memory / immediate expressions 

Allow the proper recognition of Enum values and global variables inside ms inline-asm memory / immediate expressions, as they require some additional overhead and treated incorrect if doesn't early recognized.
supersedes D33277, D35775
Corrsponds with D37412, D37413

llvm-svn: 314300
This commit is contained in:
Coby Tayree 2017-09-27 12:36:54 +00:00
parent 3bcc9f0c1f
commit 0b1ed7e19a
2 changed files with 89 additions and 0 deletions
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54
clang/test/CodeGen/ms-inline-asm-enums.cpp Normal file
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// REQUIRES: x86-registered-target
// RUN: %clang_cc1 %s -fasm-blocks -triple i386-apple-darwin10 -emit-llvm -o - | FileCheck %s
namespace x {
enum { A = 12 };
struct y_t {
enum { A = 17 };
int r;
} y;
}
// CHECK-LABEL: t1
void t1() {
enum { A = 1 };
// CHECK: call void asm
// CHECK-SAME: mov eax, $$12
__asm mov eax, x::A
// CHECK-SAME: mov eax, $$17
__asm mov eax, x::y_t::A
// CHECK-NEXT: call void asm
// CHECK-SAME: mov eax, $$1
__asm {mov eax, A}
}
// CHECK-LABEL: t2
void t2() {
enum { A = 1, B };
// CHECK: call void asm
// CHECK-SAME: mov eax, $$21
__asm mov eax, (A + 9) * 2 + A
// CHECK-SAME: mov eax, $$4
__asm mov eax, A << 2
// CHECK-SAME: mov eax, $$2
__asm mov eax, B & 3
// CHECK-SAME: mov eax, $$5
__asm mov eax, 3 + (B & 3)
// CHECK-SAME: mov eax, $$8
__asm mov eax, 2 << A * B
}
// CHECK-LABEL: t3
void t3() {
int arr[4];
enum { A = 4, B };
// CHECK: call void asm
// CHECK-SAME: mov eax, [eax + $$47]
__asm { mov eax, [(x::A + 9) + A * B + 3 + 3 + eax] }
// CHECK-NEXT: call void asm
// CHECK-SAME: mov eax, dword ptr $0[$$4]
__asm { mov eax, dword ptr [arr + A] }
// CHECK-NEXT: call void asm
// CHECK-SAME: mov eax, dword ptr $0[$$8]
__asm { mov eax, dword ptr A[arr + A] }
}

35
clang/test/CodeGen/ms-inline-asm-variables.c Normal file
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// REQUIRES: x86-registered-target
// RUN: %clang_cc1 %s -fasm-blocks -triple i386-apple-darwin10 -emit-llvm -o - | FileCheck %s
int gVar;
void t1() {
// CHECK: add eax, dword ptr gVar[eax]
__asm add eax, dword ptr gVar[eax]
// CHECK: add dword ptr gVar[eax], eax
__asm add dword ptr [eax+gVar], eax
// CHECK: add ebx, dword ptr gVar[ebx + $$270]
__asm add ebx, dword ptr gVar[271 - 82 + 81 + ebx]
// CHECK: add dword ptr gVar[ebx + $$828], ebx
__asm add dword ptr [ebx + gVar + 828], ebx
// CHECK: add ecx, dword ptr gVar[ecx + ecx * $$4 + $$4590]
__asm add ecx, dword ptr gVar[4590 + ecx + ecx*4]
// CHECK: add dword ptr gVar[ecx + ecx * $$8 + $$73], ecx
__asm add dword ptr [gVar + ecx + 45 + 23 - 53 + 60 - 2 + ecx*8], ecx
// CHECK: add gVar[ecx + ebx + $$7], eax
__asm add 1 + 1 + 2 + 3[gVar + ecx + ebx], eax
}
void t2() {
int lVar;
// CHECK: mov eax, dword ptr ${{[0-9]}}[eax]
__asm mov eax, dword ptr lVar[eax]
// CHECK: mov dword ptr ${{[0-9]}}[eax], eax
__asm mov dword ptr [eax+lVar], eax
// CHECK: mov ebx, dword ptr ${{[0-9]}}[ebx + $$270]
__asm mov ebx, dword ptr lVar[271 - 82 + 81 + ebx]
// CHECK: mov dword ptr ${{[0-9]}}[ebx + $$828], ebx
__asm mov dword ptr [ebx + lVar + 828], ebx
// CHECK: mov ${{[0-9]}}[ebx + $$47], eax
__asm mov 5 + 8 + 13 + 21[lVar + ebx], eax
}