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d4c615be8c
Discussed here: http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html In preparation for adding support for named vregs we are changing the sigil for physical registers in MIR to '$' from '%'. This will prevent name clashes of named physical register with named vregs. llvm-svn: 323922
100 lines
3.2 KiB
YAML
100 lines
3.2 KiB
YAML
# RUN: llc -O0 -mtriple aarch64-apple-ios %s -global-isel -start-after regbankselect \
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# RUN: -stop-before instruction-select -o - | FileCheck --check-prefix=CHECK --check-prefix=OPTNONE %s
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# RUN: llc -mtriple aarch64-apple-ios %s -global-isel -start-after regbankselect \
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# RUN: -stop-before instruction-select -o - | FileCheck --check-prefix=CHECK --check-prefix=OPT %s
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#
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# Check that we are only running the localizer at O0 and that it runs
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# between the regbankselect pass and the instruction-select.
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# Moreover, check that it does what we expect.
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--- |
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target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64-apple-ios"
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define float @foo(float %arg, i1 %cond) {
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br i1 %cond, label %true, label %false
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true: ; preds = %0
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br label %end
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false: ; preds = %0
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br label %end
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end: ; preds = %false, %true
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%val = phi float [ 1.000000e+00, %true ], [ 2.000000e+00, %false ]
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%res = fadd float %arg, %val
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ret float %res
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}
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...
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---
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# CHECK-LABEL: name: foo
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name: foo
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alignment: 2
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legalized: true
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regBankSelected: true
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tracksRegLiveness: true
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registers:
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# CHECK: registers:
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# CHECK-NEXT: - { id: 0, class: fpr, preferred-register: '' }
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# CHECK-NEXT: - { id: 1, class: gpr, preferred-register: '' }
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# CHECK-NEXT: - { id: 2, class: fpr, preferred-register: '' }
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# CHECK-NEXT: - { id: 3, class: fpr, preferred-register: '' }
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# CHECK-NEXT: - { id: 4, class: fpr, preferred-register: '' }
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# CHECK-NEXT: - { id: 5, class: fpr, preferred-register: '' }
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# CHECK-NEXT: - { id: 6, class: gpr, preferred-register: '' }
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# The localizer will create two new values to materialize the constants.
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# OPTNONE-NEXT: - { id: 7, class: fpr, preferred-register: '' }
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# OPTNONE-NEXT: - { id: 8, class: fpr, preferred-register: '' }
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- { id: 0, class: fpr }
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- { id: 1, class: gpr }
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- { id: 2, class: fpr }
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- { id: 3, class: fpr }
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- { id: 4, class: fpr }
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- { id: 5, class: fpr }
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- { id: 6, class: gpr }
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# First block remains untouched
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# CHECK: body
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# CHECK: %4:fpr(s32) = G_FCONSTANT float 1.000000e+00
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# CHECK: %5:fpr(s32) = G_FCONSTANT float 2.000000e+00
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# Second block will get the constant 1.0 when the localizer is enabled.
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# CHECK: bb.1.{{[a-zA-Z0-9]+}}:
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# OPT-NOT: G_FCONSTANT
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# OPTNONE: [[FONE:%[0-9]+]]:fpr(s32) = G_FCONSTANT float 1.000000e+00
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# CHECK: G_BR %bb.3
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# Thrid block will get the constant 2.0 when the localizer is enabled.
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# CHECK: bb.2.{{[a-zA-Z0-9]+}}:
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# OPT-NOT: G_FCONSTANT
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# OPTNONE: [[FTWO:%[0-9]+]]:fpr(s32) = G_FCONSTANT float 2.000000e+00
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# CHECK: bb.3.end
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# OPTNONE: %2:fpr(s32) = PHI [[FONE]](s32), %bb.1, [[FTWO]](s32), %bb.2
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# OPT: %2:fpr(s32) = PHI %4(s32), %bb.1, %5(s32), %bb.2
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# CHECK-NEXT: G_FADD %0, %2
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body: |
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bb.0 (%ir-block.0):
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liveins: $s0, $w0
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%0(s32) = COPY $s0
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%6(s32) = COPY $w0
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%1(s1) = G_TRUNC %6
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%4(s32) = G_FCONSTANT float 1.000000e+00
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%5(s32) = G_FCONSTANT float 2.000000e+00
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G_BRCOND %1(s1), %bb.1
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G_BR %bb.2
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bb.1.true:
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G_BR %bb.3
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bb.2.false:
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bb.3.end:
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%2(s32) = PHI %4(s32), %bb.1, %5(s32), %bb.2
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%3(s32) = G_FADD %0, %2
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$s0 = COPY %3(s32)
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RET_ReallyLR implicit $s0
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...
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