80aa2290fb
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
83 lines
1.6 KiB
YAML
83 lines
1.6 KiB
YAML
# RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s
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# This test ensures that the MIR parser parses basic block successors correctly.
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--- |
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define i32 @foo(i32 %a) {
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entry:
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%0 = icmp sle i32 %a, 10
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br i1 %0, label %less, label %exit
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less:
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ret i32 0
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exit:
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ret i32 %a
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}
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define i32 @bar(i32 %a) {
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entry:
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%b = icmp sle i32 %a, 10
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br i1 %b, label %0, label %1
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; <label>:0
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ret i32 0
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; <label>:1
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ret i32 %a
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}
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...
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---
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name: foo
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body: |
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; CHECK-LABEL: bb.0.entry:
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; CHECK-LABEL: bb.1.less:
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bb.0.entry:
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successors: %bb.1.less, %bb.2.exit
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liveins: $edi
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CMP32ri8 $edi, 10, implicit-def $eflags
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JCC_1 %bb.2.exit, 15, implicit killed $eflags
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bb.1.less:
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$eax = MOV32r0 implicit-def dead $eflags
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RETQ killed $eax
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bb.2.exit:
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liveins: $edi
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$eax = COPY killed $edi
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RETQ killed $eax
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...
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---
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name: bar
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body: |
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; CHECK-LABEL: name: bar
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; Verify that we can have multiple lists of successors that will be merged
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; into one.
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; CHECK-LABEL: bb.0.entry:
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; CHECK: successors: %bb.1(0x80000000), %bb.2(0x00000000)
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bb.0.entry:
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liveins: $edi
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successors: %bb.1
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successors: %bb.2
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CMP32ri8 $edi, 10, implicit-def $eflags
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JCC_1 %bb.2, 15, implicit killed $eflags
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; Verify that we can have an empty list of successors.
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; CHECK-LABEL: bb.1:
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; CHECK-NEXT: $eax = MOV32r0 implicit-def dead $eflags
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bb.1:
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successors:
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$eax = MOV32r0 implicit-def dead $eflags
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RETQ killed $eax
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bb.2:
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liveins: $edi
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$eax = COPY killed $edi
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RETQ killed $eax
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...
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