llvm-project/llvm/test/CodeGen/MIR/X86/stack-object-operands.mir

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=x86 -run-pass none -o - %s | FileCheck %s
# This test ensures that the MIR parser parses stack object machine operands
# correctly.
--- |
define i32 @test(i32 %a) {
entry:
%b = alloca i32
%0 = alloca i32
store i32 %a, i32* %b
store i32 2, i32* %0
%c = load i32, i32* %b
ret i32 %c
}
...
---
name: test
tracksRegLiveness: true
registers:
- { id: 0, class: gr32 }
- { id: 1, class: gr32 }
frameInfo:
maxAlignment: 4
fixedStack:
- { id: 0, offset: 0, size: 4, isImmutable: true, isAliased: false }
stack:
- { id: 0, name: b, size: 4, alignment: 4 }
- { id: 1, size: 4, alignment: 4 }
MIR Serialization: Change MIR syntax - use custom syntax for MBBs. This commit modifies the way the machine basic blocks are serialized - now the machine basic blocks are serialized using a custom syntax instead of relying on YAML primitives. Instead of using YAML mappings to represent the individual machine basic blocks in a machine function's body, the new syntax uses a single YAML block scalar which contains all of the machine basic blocks and instructions for that function. This is an example of a function's body that uses the old syntax: body: - id: 0 name: entry instructions: - '%eax = MOV32r0 implicit-def %eflags' - 'RETQ %eax' ... The same body is now written like this: body: | bb.0.entry: %eax = MOV32r0 implicit-def %eflags RETQ %eax ... This syntax change is motivated by the fact that the bundled machine instructions didn't map that well to the old syntax which was using a single YAML sequence to store all of the machine instructions in a block. The bundled machine instructions internally use flags like BundledPred and BundledSucc to determine the bundles, and serializing them as MI flags using the old syntax would have had a negative impact on the readability and the ease of editing for MIR files. The new syntax allows me to serialize the bundled machine instructions using a block construct without relying on the internal flags, for example: BUNDLE implicit-def dead %itstate, implicit-def %s1 ... { t2IT 1, 24, implicit-def %itstate %s1 = VMOVS killed %s0, 1, killed %cpsr, implicit killed %itstate } This commit also converts the MIR testcases to the new syntax. I developed a script that can convert from the old syntax to the new one. I will post the script on the llvm-commits mailing list in the thread for this commit. llvm-svn: 244982
2015-08-14 07:10:16 +08:00
body: |
bb.0.entry:
; CHECK-LABEL: name: test
; CHECK: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %fixed-stack.0, 1, $noreg, 0, $noreg
; CHECK: MOV32mr %stack.0.b, 1, $noreg, 0, $noreg, [[MOV32rm]]
; CHECK: MOV32mi %stack.1, 1, $noreg, 0, $noreg, 2
; CHECK: [[MOV32rm1:%[0-9]+]]:gr32 = MOV32rm %stack.0.b, 1, $noreg, 0, $noreg
; CHECK: $eax = COPY [[MOV32rm1]]
; CHECK: RETL $eax
MIR Serialization: Change MIR syntax - use custom syntax for MBBs. This commit modifies the way the machine basic blocks are serialized - now the machine basic blocks are serialized using a custom syntax instead of relying on YAML primitives. Instead of using YAML mappings to represent the individual machine basic blocks in a machine function's body, the new syntax uses a single YAML block scalar which contains all of the machine basic blocks and instructions for that function. This is an example of a function's body that uses the old syntax: body: - id: 0 name: entry instructions: - '%eax = MOV32r0 implicit-def %eflags' - 'RETQ %eax' ... The same body is now written like this: body: | bb.0.entry: %eax = MOV32r0 implicit-def %eflags RETQ %eax ... This syntax change is motivated by the fact that the bundled machine instructions didn't map that well to the old syntax which was using a single YAML sequence to store all of the machine instructions in a block. The bundled machine instructions internally use flags like BundledPred and BundledSucc to determine the bundles, and serializing them as MI flags using the old syntax would have had a negative impact on the readability and the ease of editing for MIR files. The new syntax allows me to serialize the bundled machine instructions using a block construct without relying on the internal flags, for example: BUNDLE implicit-def dead %itstate, implicit-def %s1 ... { t2IT 1, 24, implicit-def %itstate %s1 = VMOVS killed %s0, 1, killed %cpsr, implicit killed %itstate } This commit also converts the MIR testcases to the new syntax. I developed a script that can convert from the old syntax to the new one. I will post the script on the llvm-commits mailing list in the thread for this commit. llvm-svn: 244982
2015-08-14 07:10:16 +08:00
%0 = MOV32rm %fixed-stack.0, 1, _, 0, _
MOV32mr %stack.0.b, 1, _, 0, _, %0
MOV32mi %stack.1, 1, _, 0, _, 2
%1 = MOV32rm %stack.0, 1, _, 0, _
$eax = COPY %1
RETL $eax
...