| # RUN: llc -march=mipsel -mcpu=mips32r6 -start-after=block-placement %s -o - | FileCheck %s |
| |
| # Check that empty blocks in the cfg don't cause the mips hazard scheduler to |
| # crash and that the nop is inserted correctly. |
| |
| # CHECK: blezc |
| # CHECK: nop |
| # CHECK: # %bb.1: |
| # CHECK: .insn |
| # CHECK: # %bb.2: |
| # CHECK: .insn |
| # CHECK: # %bb.3: |
| # CHECK: jal |
| |
| --- | |
| ; ModuleID = '<stdin>' |
| source_filename = "<stdin>" |
| target datalayout = "e-m:m-p:32:32-i8:8:32-i16:16:32-i64:64-n32-S64" |
| |
| declare i32 @k() |
| |
| declare void @f(i32) |
| |
| define void @l5() { |
| entry: |
| %call = tail call i32 @k() |
| %cmp = icmp sgt i32 %call, 0 |
| br i1 %cmp, label %if.then, label %if.end |
| |
| if.then: ; preds = %entry |
| tail call void @f(i32 signext 2) |
| br label %if.end |
| |
| if.end: ; preds = %if.then, %entry |
| ret void |
| } |
| |
| --- |
| name: l5 |
| alignment: 2 |
| exposesReturnsTwice: false |
| legalized: false |
| regBankSelected: false |
| selected: false |
| tracksRegLiveness: true |
| frameInfo: |
| isFrameAddressTaken: false |
| isReturnAddressTaken: false |
| hasStackMap: false |
| hasPatchPoint: false |
| stackSize: 24 |
| offsetAdjustment: 0 |
| maxAlignment: 4 |
| adjustsStack: true |
| hasCalls: true |
| maxCallFrameSize: 16 |
| hasOpaqueSPAdjustment: false |
| hasVAStart: false |
| hasMustTailInVarArgFunc: false |
| stack: |
| - { id: 0, type: spill-slot, offset: -4, size: 4, alignment: 4, callee-saved-register: '$ra' } |
| body: | |
| bb.0.entry: |
| successors: %bb.1.if.then(0x50000000), %bb.4.if.end(0x30000000) |
| liveins: $ra |
| |
| $sp = ADDiu $sp, -24 |
| CFI_INSTRUCTION def_cfa_offset 24 |
| SW killed $ra, $sp, 20 :: (store 4 into %stack.0) |
| CFI_INSTRUCTION offset $ra_64, -4 |
| JAL @k, csr_o32_fp64, implicit-def dead $ra, implicit-def $sp, implicit-def $v0 |
| BLEZ $v0, %bb.4.if.end, implicit-def $at |
| |
| bb.1.if.then: |
| successors: %bb.2.if.then(0x80000000) |
| |
| bb.2.if.then: |
| successors: %bb.3.if.then(0x80000000) |
| |
| bb.3.if.then: |
| successors: %bb.4.if.end(0x80000000) |
| |
| $a0 = ADDiu $zero, 2 |
| JAL @f, csr_o32_fp64, implicit-def dead $ra, implicit killed $a0, implicit-def $sp |
| |
| bb.4.if.end: |
| $ra = LW $sp, 20 :: (load 4 from %stack.0) |
| $sp = ADDiu $sp, 24 |
| PseudoReturn undef $ra |
| |
| ... |