88 lines
3.0 KiB
Plaintext
88 lines
3.0 KiB
Plaintext
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# RUN: llc -march=amdgcn -verify-machineinstrs -run-pass simple-register-coalescing,rename-independent-subregs -o - %s | FileCheck %s
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--- |
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define amdgpu_kernel void @test0() { ret void }
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define amdgpu_kernel void @test1() { ret void }
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define amdgpu_kernel void @test2() { ret void }
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...
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---
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# In the test below we have two independent def+use pairs of subregister1 which
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# can be moved to a new virtual register. The third def of sub1 however is used
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# in combination with sub0 and needs to stay with the original vreg.
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# CHECK-LABEL: name: test0
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# CHECK: S_NOP 0, implicit-def undef %0.sub0
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# CHECK: S_NOP 0, implicit-def undef %2.sub1
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# CHECK: S_NOP 0, implicit %2.sub1
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# CHECK: S_NOP 0, implicit-def undef %1.sub1
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# CHECK: S_NOP 0, implicit %1.sub1
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# CHECK: S_NOP 0, implicit-def %0.sub1
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# CHECK: S_NOP 0, implicit %0
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name: test0
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registers:
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- { id: 0, class: sgpr_128 }
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body: |
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bb.0:
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S_NOP 0, implicit-def undef %0.sub0
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S_NOP 0, implicit-def %0.sub1
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S_NOP 0, implicit %0.sub1
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S_NOP 0, implicit-def %0.sub1
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S_NOP 0, implicit %0.sub1
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S_NOP 0, implicit-def %0.sub1
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S_NOP 0, implicit %0
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...
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---
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# Test for a bug where we would incorrectly query liveness at the instruction
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# index in rewriteOperands(). This should pass the verifier afterwards.
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# CHECK-LABEL: test1
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# CHECK: bb.0
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# CHECK: S_NOP 0, implicit-def undef %2.sub2
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# CHECK: bb.1
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# CHECK: S_NOP 0, implicit-def %2.sub1
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# CHECK-NEXT: S_NOP 0, implicit-def %2.sub3
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# CHECK-NEXT: S_NOP 0, implicit %2
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# CHECK-NEXT: S_NOP 0, implicit-def undef %0.sub0
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# CHECK-NEXT: S_NOP 0, implicit %2.sub1
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# CHECK-NEXT: S_NOP 0, implicit %0.sub0
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# CHECK: bb.2
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# CHECK: S_NOP 0, implicit %2.sub
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name: test1
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registers:
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- { id: 0, class: sgpr_128 }
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- { id: 1, class: sgpr_128 }
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body: |
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bb.0:
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S_NOP 0, implicit-def undef %0.sub2
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S_CBRANCH_VCCNZ %bb.1, implicit undef $vcc
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S_BRANCH %bb.2
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bb.1:
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S_NOP 0, implicit-def %0.sub1
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S_NOP 0, implicit-def %0.sub3
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%1 = COPY %0
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S_NOP 0, implicit %1
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S_NOP 0, implicit-def %1.sub0
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S_NOP 0, implicit %1.sub1
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S_NOP 0, implicit %1.sub0
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bb.2:
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S_NOP 0, implicit %0.sub2
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...
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# In this test, there are two pairs of tied operands
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# within the inline asm statement:
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# (1) %0.sub0 + %0.sub0 and (2) %0.sub1 + %0.sub1
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# Check that renaming (2) does not inadvertently rename (1).
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# CHECK-LABEL: name: test2
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# CHECK: INLINEASM &"", 32 /* isconvergent attdialect */, 327690 /* regdef:SReg_1_with_sub0 */, def undef %0.sub0, 327690 /* regdef:SReg_1_with_sub0 */, def dead %1.sub1, 2147483657 /* reguse tiedto:$0 */, undef %0.sub0(tied-def 3), 2147549193 /* reguse tiedto:$1 */, %1.sub1(tied-def 5)
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name: test2
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body: |
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bb.0:
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undef %0.sub0:vreg_64 = IMPLICIT_DEF
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bb.1:
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undef %0.sub1:vreg_64 = V_ALIGNBIT_B32_e64 %0.sub0:vreg_64, %0.sub0:vreg_64, 16, implicit $exec
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INLINEASM &"", 32, 327690, def undef %0.sub0:vreg_64, 327690, def %0.sub1:vreg_64, 2147483657, undef %0.sub0:vreg_64(tied-def 3), 2147549193, %0.sub1:vreg_64(tied-def 5)
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S_BRANCH %bb.1
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...
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