derek.holloway
7502bf64a4
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157 lines
13 KiB
YAML
157 lines
13 KiB
YAML
# RUN: llc -mtriple=aarch64-none-linux-gnu -run-pass greedy -verify-machineinstrs -o - %s | FileCheck %s
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# RUN: llc -mtriple=aarch64_be-none-linux-gnu -run-pass greedy -verify-machineinstrs -o - %s | FileCheck %s
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# RUN: llc -mtriple=aarch64-none-linux-gnu -passes=greedy -o - %s | FileCheck %s
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# RUN: llc -mtriple=aarch64_be-none-linux-gnu -passes=greedy -o - %s | FileCheck %s
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--- |
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define i64 @test_subreg_spill_fold() { ret i64 0 }
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define i64 @test_subreg_spill_fold2() { ret i64 0 }
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define i64 @test_subreg_spill_fold3() { ret i64 0 }
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define <4 x float> @test_subreg_spill_fold4() { ret <4 x float> undef }
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define i64 @test_subreg_fill_fold() { ret i64 0 }
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define double @test_subreg_fill_fold2() { ret double 0.0 }
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define <4 x float> @test_subreg_fill_fold3() { ret <4 x float> undef }
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define i64 @test_subreg_fill_fold4() { ret i64 0 }
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define i64 @test_nzcv_spill_fold() { ret i64 0 }
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...
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---
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# CHECK-LABEL: name: test_subreg_spill_fold
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# Ensure that the spilled subreg COPY is eliminated and folded into the spill store.
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name: test_subreg_spill_fold
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registers:
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- { id: 0, class: gpr64 }
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body: |
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bb.0:
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; CHECK: STRXui $xzr, %stack.0, 0 :: (store (s64) into %stack.0)
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undef %0.sub_32 = COPY $wzr
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INLINEASM &nop, 1, 12, implicit-def dead $x0, 12, implicit-def dead $x1, 12, implicit-def dead $x2, 12, implicit-def dead $x3, 12, implicit-def dead $x4, 12, implicit-def dead $x5, 12, implicit-def dead $x6, 12, implicit-def dead $x7, 12, implicit-def dead $x8, 12, implicit-def dead $x9, 12, implicit-def dead $x10, 12, implicit-def dead $x11, 12, implicit-def dead $x12, 12, implicit-def dead $x13, 12, implicit-def dead $x14, 12, implicit-def dead $x15, 12, implicit-def dead $x16, 12, implicit-def dead $x17, 12, implicit-def dead $x18, 12, implicit-def dead $x19, 12, implicit-def dead $x20, 12, implicit-def dead $x21, 12, implicit-def dead $x22, 12, implicit-def dead $x23, 12, implicit-def dead $x24, 12, implicit-def dead $x25, 12, implicit-def dead $x26, 12, implicit-def dead $x27, 12, implicit-def dead $x28, 12, implicit-def dead $fp, 12, implicit-def dead $lr, 12, implicit-def $sp
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$x0 = COPY %0
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RET_ReallyLR implicit $x0
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...
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---
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# CHECK-LABEL: name: test_subreg_spill_fold2
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# Similar to test_subreg_spill_fold, but with a %0 register class not containing %WZR.
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name: test_subreg_spill_fold2
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registers:
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- { id: 0, class: gpr64sp }
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body: |
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bb.0:
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; CHECK: STRXui $xzr, %stack.0, 0 :: (store (s64) into %stack.0)
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undef %0.sub_32 = COPY $wzr
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INLINEASM &nop, 1, 12, implicit-def dead $x0, 12, implicit-def dead $x1, 12, implicit-def dead $x2, 12, implicit-def dead $x3, 12, implicit-def dead $x4, 12, implicit-def dead $x5, 12, implicit-def dead $x6, 12, implicit-def dead $x7, 12, implicit-def dead $x8, 12, implicit-def dead $x9, 12, implicit-def dead $x10, 12, implicit-def dead $x11, 12, implicit-def dead $x12, 12, implicit-def dead $x13, 12, implicit-def dead $x14, 12, implicit-def dead $x15, 12, implicit-def dead $x16, 12, implicit-def dead $x17, 12, implicit-def dead $x18, 12, implicit-def dead $x19, 12, implicit-def dead $x20, 12, implicit-def dead $x21, 12, implicit-def dead $x22, 12, implicit-def dead $x23, 12, implicit-def dead $x24, 12, implicit-def dead $x25, 12, implicit-def dead $x26, 12, implicit-def dead $x27, 12, implicit-def dead $x28, 12, implicit-def dead $fp, 12, implicit-def dead $lr, 12, implicit-def $sp
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$x0 = ADDXri %0, 1, 0
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RET_ReallyLR implicit $x0
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...
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---
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# CHECK-LABEL: name: test_subreg_spill_fold3
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# Similar to test_subreg_spill_fold, but with a cross register class copy.
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name: test_subreg_spill_fold3
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registers:
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- { id: 0, class: fpr64 }
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body: |
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bb.0:
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; CHECK: STRXui $xzr, %stack.0, 0 :: (store (s64) into %stack.0)
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undef %0.ssub = COPY $wzr
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INLINEASM &nop, 1, 12, implicit-def dead $d0, 12, implicit-def dead $d1, 12, implicit-def dead $d2, 12, implicit-def dead $d3, 12, implicit-def dead $d4, 12, implicit-def dead $d5, 12, implicit-def dead $d6, 12, implicit-def dead $d7, 12, implicit-def dead $d8, 12, implicit-def dead $d9, 12, implicit-def dead $d10, 12, implicit-def dead $d11, 12, implicit-def dead $d12, 12, implicit-def dead $d13, 12, implicit-def dead $d14, 12, implicit-def dead $d15, 12, implicit-def dead $d16, 12, implicit-def dead $d17, 12, implicit-def dead $d18, 12, implicit-def dead $d19, 12, implicit-def dead $d20, 12, implicit-def dead $d21, 12, implicit-def dead $d22, 12, implicit-def dead $d23, 12, implicit-def dead $d24, 12, implicit-def dead $d25, 12, implicit-def dead $d26, 12, implicit-def dead $d27, 12, implicit-def dead $d28, 12, implicit-def dead $d29, 12, implicit-def dead $d30, 12, implicit-def $d31
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$x0 = COPY %0
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RET_ReallyLR implicit $x0
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...
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---
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# CHECK-LABEL: name: test_subreg_spill_fold4
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# A spilled write to a 128-bit register needs a 128-bit store
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name: test_subreg_spill_fold4
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registers:
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- { id: 0, class: fpr128 }
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body: |
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bb.0:
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; CHECK: undef %1.ssub:fpr128 = COPY $wzr
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; CHECK-NEXT: STRQui %1, %stack.0, 0 :: (store (s128) into %stack.0)
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undef %0.ssub:fpr128 = COPY $wzr
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INLINEASM &nop, 1, 12, implicit-def dead $d0, 12, implicit-def dead $d1, 12, implicit-def dead $d2, 12, implicit-def dead $d3, 12, implicit-def dead $d4, 12, implicit-def dead $d5, 12, implicit-def dead $d6, 12, implicit-def dead $d7, 12, implicit-def dead $d8, 12, implicit-def dead $d9, 12, implicit-def dead $d10, 12, implicit-def dead $d11, 12, implicit-def dead $d12, 12, implicit-def dead $d13, 12, implicit-def dead $d14, 12, implicit-def dead $d15, 12, implicit-def dead $d16, 12, implicit-def dead $d17, 12, implicit-def dead $d18, 12, implicit-def dead $d19, 12, implicit-def dead $d20, 12, implicit-def dead $d21, 12, implicit-def dead $d22, 12, implicit-def dead $d23, 12, implicit-def dead $d24, 12, implicit-def dead $d25, 12, implicit-def dead $d26, 12, implicit-def dead $d27, 12, implicit-def dead $d28, 12, implicit-def dead $d29, 12, implicit-def dead $d30, 12, implicit-def $d31
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$q0 = COPY %0
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RET_ReallyLR implicit $q0
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...
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---
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# CHECK-LABEL: name: test_subreg_fill_fold
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# Ensure that the filled COPY is eliminated and folded into the fill load.
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name: test_subreg_fill_fold
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registers:
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- { id: 0, class: gpr32 }
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- { id: 1, class: gpr64 }
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body: |
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bb.0:
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%0 = COPY $wzr
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INLINEASM &nop, 1, 12, implicit-def dead $x0, 12, implicit-def dead $x1, 12, implicit-def dead $x2, 12, implicit-def dead $x3, 12, implicit-def dead $x4, 12, implicit-def dead $x5, 12, implicit-def dead $x6, 12, implicit-def dead $x7, 12, implicit-def dead $x8, 12, implicit-def dead $x9, 12, implicit-def dead $x10, 12, implicit-def dead $x11, 12, implicit-def dead $x12, 12, implicit-def dead $x13, 12, implicit-def dead $x14, 12, implicit-def dead $x15, 12, implicit-def dead $x16, 12, implicit-def dead $x17, 12, implicit-def dead $x18, 12, implicit-def dead $x19, 12, implicit-def dead $x20, 12, implicit-def dead $x21, 12, implicit-def dead $x22, 12, implicit-def dead $x23, 12, implicit-def dead $x24, 12, implicit-def dead $x25, 12, implicit-def dead $x26, 12, implicit-def dead $x27, 12, implicit-def dead $x28, 12, implicit-def dead $fp, 12, implicit-def dead $lr, 12, implicit-def $sp
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; CHECK: undef %1.sub_32:gpr64 = LDRWui %stack.0, 0 :: (load (s32) from %stack.0)
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undef %1.sub_32 = COPY %0
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$x0 = COPY %1
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RET_ReallyLR implicit $x0
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...
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---
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# CHECK-LABEL: name: test_subreg_fill_fold2
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# Similar to test_subreg_fill_fold, but with a cross-class copy.
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name: test_subreg_fill_fold2
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registers:
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- { id: 0, class: gpr32 }
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- { id: 1, class: fpr64 }
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body: |
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bb.0:
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%0 = COPY $wzr
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INLINEASM &nop, 1, 12, implicit-def dead $x0, 12, implicit-def dead $x1, 12, implicit-def dead $x2, 12, implicit-def dead $x3, 12, implicit-def dead $x4, 12, implicit-def dead $x5, 12, implicit-def dead $x6, 12, implicit-def dead $x7, 12, implicit-def dead $x8, 12, implicit-def dead $x9, 12, implicit-def dead $x10, 12, implicit-def dead $x11, 12, implicit-def dead $x12, 12, implicit-def dead $x13, 12, implicit-def dead $x14, 12, implicit-def dead $x15, 12, implicit-def dead $x16, 12, implicit-def dead $x17, 12, implicit-def dead $x18, 12, implicit-def dead $x19, 12, implicit-def dead $x20, 12, implicit-def dead $x21, 12, implicit-def dead $x22, 12, implicit-def dead $x23, 12, implicit-def dead $x24, 12, implicit-def dead $x25, 12, implicit-def dead $x26, 12, implicit-def dead $x27, 12, implicit-def dead $x28, 12, implicit-def dead $fp, 12, implicit-def dead $lr, 12, implicit-def $sp
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; CHECK: undef %1.ssub:fpr64 = LDRSui %stack.0, 0 :: (load (s32) from %stack.0)
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undef %1.ssub = COPY %0
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$d0 = COPY %1
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RET_ReallyLR implicit $d0
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...
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---
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# CHECK-LABEL: name: test_subreg_fill_fold3
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# A filled copy from a sub-register should load the whole register
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name: test_subreg_fill_fold3
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tracksRegLiveness: true
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registers:
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- { id: 0, class: fpr128 }
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liveins:
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- { reg: '$q0' }
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body: |
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bb.0:
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liveins: $q0
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%0 = COPY $q0
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INLINEASM &nop, 1, 12, implicit-def dead $d0, 12, implicit-def dead $d1, 12, implicit-def dead $d2, 12, implicit-def dead $d3, 12, implicit-def dead $d4, 12, implicit-def dead $d5, 12, implicit-def dead $d6, 12, implicit-def dead $d7, 12, implicit-def dead $d8, 12, implicit-def dead $d9, 12, implicit-def dead $d10, 12, implicit-def dead $d11, 12, implicit-def dead $d12, 12, implicit-def dead $d13, 12, implicit-def dead $d14, 12, implicit-def dead $d15, 12, implicit-def dead $d16, 12, implicit-def dead $d17, 12, implicit-def dead $d18, 12, implicit-def dead $d19, 12, implicit-def dead $d20, 12, implicit-def dead $d21, 12, implicit-def dead $d22, 12, implicit-def dead $d23, 12, implicit-def dead $d24, 12, implicit-def dead $d25, 12, implicit-def dead $d26, 12, implicit-def dead $d27, 12, implicit-def dead $d28, 12, implicit-def dead $d29, 12, implicit-def dead $d30, 12, implicit-def $d31
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; CHECK: %1:fpr128 = LDRQui %stack.0, 0 :: (load (s128) from %stack.0)
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; CHECK-NEXT: $s0 = COPY %1.ssub
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$s0 = COPY %0.ssub
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RET_ReallyLR implicit $s0
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...
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---
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# CHECK-LABEL: name: test_subreg_fill_fold4
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# Ensure the COPY is maintained when its result register class is not compatible
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# with the fill load's.
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name: test_subreg_fill_fold4
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registers:
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- { id: 0, class: gpr32 }
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- { id: 1, class: gpr64sp }
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body: |
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bb.0:
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%0 = COPY $wzr
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INLINEASM &nop, 1, 12, implicit-def dead $x0, 12, implicit-def dead $x1, 12, implicit-def dead $x2, 12, implicit-def dead $x3, 12, implicit-def dead $x4, 12, implicit-def dead $x5, 12, implicit-def dead $x6, 12, implicit-def dead $x7, 12, implicit-def dead $x8, 12, implicit-def dead $x9, 12, implicit-def dead $x10, 12, implicit-def dead $x11, 12, implicit-def dead $x12, 12, implicit-def dead $x13, 12, implicit-def dead $x14, 12, implicit-def dead $x15, 12, implicit-def dead $x16, 12, implicit-def dead $x17, 12, implicit-def dead $x18, 12, implicit-def dead $x19, 12, implicit-def dead $x20, 12, implicit-def dead $x21, 12, implicit-def dead $x22, 12, implicit-def dead $x23, 12, implicit-def dead $x24, 12, implicit-def dead $x25, 12, implicit-def dead $x26, 12, implicit-def dead $x27, 12, implicit-def dead $x28, 12, implicit-def dead $fp, 12, implicit-def dead $lr, 12, implicit-def $sp
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; CHECK: %2:gpr32 = LDRWui %stack.0, 0 :: (load (s32) from %stack.0)
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; CHECK: undef %1.sub_32:gpr64sp = COPY %2
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undef %1.sub_32:gpr64sp = COPY %0
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$x0 = COPY %1
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RET_ReallyLR implicit $x0
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...
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---
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# CHECK-LABEL: name: test_nzcv_spill_fold
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# Ensure that nzcv COPY cannot be folded.
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name: test_nzcv_spill_fold
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registers:
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- { id: 0, class: gpr64 }
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body: |
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bb.0:
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; CHECK: %1:gpr64 = COPY $nzcv
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; CHECK: STRXui %1, %stack.0, 0 :: (store (s64) into %stack.0)
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%0 = COPY $nzcv
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INLINEASM &nop, 1, 12, implicit-def dead $x0, 12, implicit-def dead $x1, 12, implicit-def dead $x2, 12, implicit-def dead $x3, 12, implicit-def dead $x4, 12, implicit-def dead $x5, 12, implicit-def dead $x6, 12, implicit-def dead $x7, 12, implicit-def dead $x8, 12, implicit-def dead $x9, 12, implicit-def dead $x10, 12, implicit-def dead $x11, 12, implicit-def dead $x12, 12, implicit-def dead $x13, 12, implicit-def dead $x14, 12, implicit-def dead $x15, 12, implicit-def dead $x16, 12, implicit-def dead $x17, 12, implicit-def dead $x18, 12, implicit-def dead $x19, 12, implicit-def dead $x20, 12, implicit-def dead $x21, 12, implicit-def dead $x22, 12, implicit-def dead $x23, 12, implicit-def dead $x24, 12, implicit-def dead $x25, 12, implicit-def dead $x26, 12, implicit-def dead $x27, 12, implicit-def dead $x28, 12, implicit-def dead $fp, 12, implicit-def dead $lr, 12, implicit-def $sp
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$x0 = COPY %0
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RET_ReallyLR implicit $x0
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...
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