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llvm-mirror/test/CodeGen/X86/test_x86condbr_globaladdr.mir
Craig Topper 38e5713f51 [X86] Merge the different Jcc instructions for each condition code into single instructions that store the condition code as an operand.
Summary:
This avoids needing an isel pattern for each condition code. And it removes translation switches for converting between Jcc instructions and condition codes.

Now the printer, encoder and disassembler take care of converting the immediate. We use InstAliases to handle the assembly matching. But we print using the asm string in the instruction definition. The instruction itself is marked IsCodeGenOnly=1 to hide it from the assembly parser.

Reviewers: spatel, lebedev.ri, courbet, gchatelet, RKSimon

Reviewed By: RKSimon

Subscribers: MatzeB, qcolombet, eraman, hiraditya, arphaman, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60228

llvm-svn: 357802
2019-04-05 19:28:09 +00:00

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# RUN: llc -o - %s -mtriple=i686-- -mcpu=ivybridge --run-pass X86CondBrFolding | FileCheck %s
# Test wrong assertion when meet SUB32ri with global address
# in X86CondBrFoldingiPass
--- |
@img2buf_normal = external global i32
define void @func() { ret void }
...
---
# CHECK: bb.0:
# CHECK: %2:gr32 = SUB32ri %1, @img2buf_normal, implicit-def $eflags
name: func
tracksRegLiveness: true
body: |
bb.0:
liveins: $edx
%1:gr32 = COPY $edx
%2:gr32 = MOV32rm %1:gr32, 1, $noreg, 850256, $noreg
%3:gr32 = SUB32ri %2:gr32, @img2buf_normal, implicit-def $eflags
JCC_1 %bb.2, 4, implicit $eflags
JMP_1 %bb.3
bb.2:
RET 0, undef $eax
bb.3:
$eax = MOV32rr %3:gr32
RET 0, $eax
...