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hanchenye-llvm-project/llvm/test/CodeGen/MIR/Generic/llvmIR.mir

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[MIR] Print on the given output instead of stderr. Currently the MIR framework prints all its outputs (errors and actual representation) on stderr. This patch fixes that by printing the regular output in the output specified with -o. Differential Revision: http://reviews.llvm.org/D22251 llvm-svn: 275314
2016-07-14 04:36:03 +08:00
# RUN: llc -start-after branch-folder -stop-after branch-folder -o - %s | FileCheck %s
Resubmit r237954 (MIR Serialization: print and parse LLVM IR using MIR format). This commit a 3rd attempt at comitting the initial MIR serialization patch. The first commit (r237708) was reverted in 237730. Then the second commit (r237954) was reverted in r238007, as the MIR library under CodeGen caused a circular dependency where the CodeGen library depended on MIR and MIR library depended on CodeGen. This commit has fixed the dependencies between CodeGen and MIR by reorganizing the MIR serialization code - the code that prints out MIR has been moved to CodeGen, and the MIR library has been renamed to MIRParser. Now the CodeGen library doesn't depend on the MIRParser library, thus the circular dependency no longer exists. --Original Commit Message-- MIR Serialization: print and parse LLVM IR using MIR format. This commit is the initial commit for the MIR serialization project. It creates a new library under CodeGen called 'MIR'. This new library adds a new machine function pass that prints out the LLVM IR using the MIR format. This pass is then added as a last pass when a 'stop-after' option is used in llc. The new library adds the initial functionality for parsing of MIR files as well. This commit also extends the llc tool so that it can recognize and parse MIR input files. Reviewers: Duncan P. N. Exon Smith, Matthias Braun, Philip Reames Differential Revision: http://reviews.llvm.org/D9616 llvm-svn: 238341
2015-05-28 02:02:19 +08:00
# This test ensures that the LLVM IR that's embedded with MIR is parsed
# correctly.
--- |
; CHECK: define i32 @foo(i32 %x, i32 %y)
; CHECK: %z = alloca i32, align 4
; CHECK: store i32 %x, i32* %z, align 4
; CHECK: br label %Test
; CHECK: Test:
; CHECK: %m = load i32, i32* %z, align 4
; CHECK: %cond = icmp eq i32 %y, %m
; CHECK: br i1 %cond, label %IfEqual, label %IfUnequal
; CHECK: IfEqual:
; CHECK: ret i32 1
; CHECK: IfUnequal:
; CHECK: ret i32 0
define i32 @foo(i32 %x, i32 %y) {
%z = alloca i32, align 4
store i32 %x, i32* %z, align 4
br label %Test
Test:
%m = load i32, i32* %z, align 4
%cond = icmp eq i32 %y, %m
br i1 %cond, label %IfEqual, label %IfUnequal
IfEqual:
ret i32 1
IfUnequal:
ret i32 0
}
...
MIR Serialization: Connect the machine function analysis pass to the MIR parser. This commit connects the machine function analysis pass (which creates machine functions) to the MIR parser, which will initialize the machine functions with the state from the MIR file and reconstruct the machine IR. This commit introduces a new interface called 'MachineFunctionInitializer', which can be used to provide custom initialization for the machine functions. This commit also introduces a new diagnostic class called 'DiagnosticInfoMIRParser' which is used for MIR parsing errors. This commit modifies the default diagnostic handling in LLVMContext - now the the diagnostics are printed directly into llvm::errs() so that the MIR parsing errors can be printed with colours. Reviewers: Justin Bogner Differential Revision: http://reviews.llvm.org/D9928 llvm-svn: 239753
2015-06-16 04:30:22 +08:00
---
name: foo
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:
MIR Serialization: Connect the machine function analysis pass to the MIR parser. This commit connects the machine function analysis pass (which creates machine functions) to the MIR parser, which will initialize the machine functions with the state from the MIR file and reconstruct the machine IR. This commit introduces a new interface called 'MachineFunctionInitializer', which can be used to provide custom initialization for the machine functions. This commit also introduces a new diagnostic class called 'DiagnosticInfoMIRParser' which is used for MIR parsing errors. This commit modifies the default diagnostic handling in LLVMContext - now the the diagnostics are printed directly into llvm::errs() so that the MIR parsing errors can be printed with colours. Reviewers: Justin Bogner Differential Revision: http://reviews.llvm.org/D9928 llvm-svn: 239753
2015-06-16 04:30:22 +08:00
...