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-rw-r--r--llvm/test/CodeGen/X86/subreg-to-reg-coalescing.mir451
1 files changed, 451 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/subreg-to-reg-coalescing.mir b/llvm/test/CodeGen/X86/subreg-to-reg-coalescing.mir
new file mode 100644
index 0000000..e4fb812
--- /dev/null
+++ b/llvm/test/CodeGen/X86/subreg-to-reg-coalescing.mir
@@ -0,0 +1,451 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 2
+# RUN: llc -mtriple=x86_64-- -run-pass=register-coalescer -o - %s | FileCheck %s --match-full-lines
+
+# We cannot lose the liveness of the high subregister of %1 when
+# coalesced with %0, so introduce an implicit-def of the super
+# register on the MOV.
+
+---
+name: coalesce_mov32r0_into_subreg_to_reg64
+frameInfo:
+ adjustsStack: true
+tracksRegLiveness: true
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: coalesce_mov32r0_into_subreg_to_reg64
+ ; CHECK: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: undef [[MOV32r0_:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = MOV32r0 implicit-def dead $eflags, implicit-def [[MOV32r0_]]
+ ; CHECK-NEXT: dead $edi = MOV32r0 implicit-def dead $eflags, implicit-def $rdi
+ ; CHECK-NEXT: CALL64r [[MOV32r0_]], csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: RET 0
+ ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ %0:gr32 = MOV32r0 implicit-def dead $eflags
+ %1:gr64 = SUBREG_TO_REG 0, killed %0, %subreg.sub_32bit
+ $rdi = COPY %1
+ CALL64r killed %1, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ RET 0
+
+...
+
+---
+name: subreg_to_reg_folds_to_undef
+frameInfo:
+ adjustsStack: true
+tracksRegLiveness: true
+body: |
+ bb.0:
+ liveins: $rax
+
+ ; CHECK-LABEL: name: subreg_to_reg_folds_to_undef
+ ; CHECK: liveins: $rax
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64_with_sub_8bit = COPY $rax
+ ; CHECK-NEXT: undef [[MOV32rr:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = MOV32rr [[COPY]].sub_32bit, implicit-def [[MOV32rr]]
+ ; CHECK-NEXT: RET 0, implicit [[MOV32rr]]
+ %0:gr64 = COPY killed $rax
+ %1:gr32 = COPY killed %0.sub_32bit
+ %2:gr32 = MOV32rr killed %1
+ %3:gr64 = SUBREG_TO_REG 0, killed %2, %subreg.sub_32bit
+ %4:gr64 = COPY killed %3
+ RET 0, implicit %4
+
+...
+
+---
+name: coalesce_mov32r0_subreg_def_into_subreg_to_reg64
+frameInfo:
+ adjustsStack: true
+tracksRegLiveness: true
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: coalesce_mov32r0_subreg_def_into_subreg_to_reg64
+ ; CHECK: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: undef [[MOV32r0_:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = MOV32r0 implicit-def dead $eflags, implicit-def [[MOV32r0_]]
+ ; CHECK-NEXT: dead $edi = MOV32r0 implicit-def dead $eflags, implicit-def $rdi
+ ; CHECK-NEXT: CALL64r [[MOV32r0_]], csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: RET 0
+ ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ undef %0.sub_32bit:gr64_with_sub_8bit = MOV32r0 implicit-def dead $eflags
+ %1:gr64 = SUBREG_TO_REG 0, killed %0.sub_32bit, %subreg.sub_32bit
+ $rdi = COPY %1
+ CALL64r killed %1, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ RET 0
+
+...
+
+---
+name: coalesce_mov32r0_into_subreg_def_with_super_def_to_reg64
+frameInfo:
+ adjustsStack: true
+tracksRegLiveness: true
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: coalesce_mov32r0_into_subreg_def_with_super_def_to_reg64
+ ; CHECK: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: undef [[MOV32r0_:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = MOV32r0 implicit-def dead $eflags, implicit-def [[MOV32r0_]], implicit-def [[MOV32r0_]]
+ ; CHECK-NEXT: dead $edi = MOV32r0 implicit-def dead $eflags, implicit-def $rdi, implicit-def $rdi
+ ; CHECK-NEXT: CALL64r [[MOV32r0_]], csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: RET 0
+ ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ undef %0.sub_32bit:gr64_with_sub_8bit = MOV32r0 implicit-def dead $eflags, implicit-def %0
+ %1:gr64 = SUBREG_TO_REG 0, killed %0.sub_32bit, %subreg.sub_32bit
+ $rdi = COPY %1
+ CALL64r killed %1, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ RET 0
+
+...
+
+---
+name: coalesce_mov32r0_into_subreg_to_reg64_already_defs_other_subreg
+frameInfo:
+ adjustsStack: true
+tracksRegLiveness: true
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: coalesce_mov32r0_into_subreg_to_reg64_already_defs_other_subreg
+ ; CHECK: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: undef [[MOV32r0_:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = MOV32r0 implicit-def dead $eflags, implicit-def undef [[MOV32r0_]].sub_8bit, implicit-def [[MOV32r0_]]
+ ; CHECK-NEXT: INLINEASM &"", 0 /* attdialect */, implicit [[MOV32r0_]]
+ ; CHECK-NEXT: CALL64r [[MOV32r0_]], csr_64, implicit $rsp, implicit $ssp, implicit undef $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: RET 0
+ ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ %0:gr32 = MOV32r0 implicit-def dead $eflags, implicit-def undef %0.sub_8bit
+ %1:gr64 = SUBREG_TO_REG 0, killed %0, %subreg.sub_32bit
+ INLINEASM &"", 0, implicit %1
+ CALL64r killed %1, csr_64, implicit $rsp, implicit $ssp, implicit undef $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ RET 0
+
+...
+
+
+# Reduced realistic case which was asserting after introducing new implicit-defs
+---
+name: coalesce_needs_implicit_defs
+frameInfo:
+ adjustsStack: true
+tracksRegLiveness: true
+body: |
+ ; CHECK-LABEL: name: coalesce_needs_implicit_defs
+ ; CHECK: bb.0:
+ ; CHECK-NEXT: successors: %bb.1(0x80000000)
+ ; CHECK-NEXT: liveins: $rdi
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64 = COPY $rdi
+ ; CHECK-NEXT: undef [[MOV32r0_:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = MOV32r0 implicit-def dead $eflags, implicit-def [[MOV32r0_]], implicit-def [[MOV32r0_]]
+ ; CHECK-NEXT: undef [[MOV32r0_1:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = MOV32r0 implicit-def dead $eflags, implicit-def [[MOV32r0_1]], implicit-def [[MOV32r0_1]]
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.1:
+ ; CHECK-NEXT: successors: %bb.1(0x80000000)
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: undef [[MOV32r0_2:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = MOV32r0 implicit-def dead $eflags
+ ; CHECK-NEXT: TEST64rr [[MOV32r0_1]], [[MOV32r0_1]], implicit-def $eflags
+ ; CHECK-NEXT: [[MOV32r0_2:%[0-9]+]].sub_8bit:gr64_with_sub_8bit = SETCCr 4, implicit killed $eflags
+ ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: dead $edi = MOV32r0 implicit-def dead $eflags, implicit-def $rdi
+ ; CHECK-NEXT: CALL64r [[MOV32r0_]], csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: [[MOV32r0_2:%[0-9]+]]:gr64_with_sub_8bit = SHL64ri [[MOV32r0_2]], 4, implicit-def dead $eflags
+ ; CHECK-NEXT: [[MOV32r0_2:%[0-9]+]]:gr64_with_sub_8bit = ADD64rr [[MOV32r0_2]], [[COPY]], implicit-def dead $eflags
+ ; CHECK-NEXT: [[MOV32r0_1:%[0-9]+]]:gr64_with_sub_8bit = COPY [[MOV32r0_2]]
+ ; CHECK-NEXT: JMP_1 %bb.1
+ bb.0:
+ liveins: $rdi
+
+ %0:gr64 = COPY killed $rdi
+ %1:gr32 = MOV32r0 implicit-def dead $eflags
+ %2:gr64 = SUBREG_TO_REG 0, %1, %subreg.sub_32bit
+ %3:gr64 = COPY killed %2
+
+ bb.1:
+ %4:gr64 = COPY killed %3
+ %5:gr32 = MOV32r0 implicit-def dead $eflags
+ TEST64rr killed %4, %4, implicit-def $eflags
+ %6:gr8 = SETCCr 4, implicit killed $eflags
+ %7:gr32 = COPY killed %5
+ %7.sub_8bit:gr32 = COPY killed %6
+ %8:gr64 = SUBREG_TO_REG 0, killed %7, %subreg.sub_32bit
+ ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ %9:gr64 = SUBREG_TO_REG 0, %1, %subreg.sub_32bit
+ $rdi = COPY %9
+ CALL64r killed %9, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ %10:gr64 = COPY killed %8
+ %10:gr64 = SHL64ri %10, 4, implicit-def dead $eflags
+ %11:gr64 = COPY killed %10
+ %11:gr64 = ADD64rr %11, %0, implicit-def dead $eflags
+ %3:gr64 = COPY killed %11
+ JMP_1 %bb.1
+
+...
+
+# Make sure to add the 'undef' flag to the result register %2,
+# because the top 32bits are not defined.
+---
+name: coalesce_add_implicitdef_and_undef
+frameInfo:
+ adjustsStack: true
+tracksRegLiveness: true
+body: |
+ ; CHECK-LABEL: name: coalesce_add_implicitdef_and_undef
+ ; CHECK: bb.0:
+ ; CHECK-NEXT: successors: %bb.1(0x80000000)
+ ; CHECK-NEXT: liveins: $eflags, $edx
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: undef [[COPY:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = COPY $edx
+ ; CHECK-NEXT: JMP_1 %bb.1
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.1:
+ ; CHECK-NEXT: undef [[COPY:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = ADD32ri [[COPY]].sub_32bit, -34, implicit-def $eflags, implicit-def [[COPY]]
+ ; CHECK-NEXT: FAKE_USE [[COPY]]
+ ; CHECK-NEXT: RET 0
+ bb.0:
+ liveins: $eflags, $edx
+ %0:gr32 = COPY $edx
+ JMP_1 %bb.1
+
+ bb.1:
+ %1:gr32 = COPY %0
+ %1:gr32 = ADD32ri %1, -34, implicit-def $eflags
+ %2:gr64_with_sub_8bit = SUBREG_TO_REG 0, killed %1, %subreg.sub_32bit
+ FAKE_USE %2
+ RET 0
+...
+
+# We can't mark the destination register as 'undef' or add implicit-def
+# because the top 24 bits of %0:gr32 are retained by the SUBREG_TO_REG.
+#
+# For example, if this were to result in:
+#
+# undef %2.sub_32bit:gr64_with_sub_8bit = COPY $edx
+# %1:gr8 = SETCCr 4, implicit $eflags
+# JMP_1 %bb.1
+#
+# bb.1:
+# undef %2.sub_8bit:gr64_with_sub_8bit = COPY %1, implicit-def %2
+#
+# Then this says that the top 56 bits of %2 are undef. That's not correct
+# because only the top 32 bits are undef.
+---
+name: coalesce_dont_add_implicitdef_or_undef
+frameInfo:
+ adjustsStack: true
+tracksRegLiveness: true
+body: |
+ ; CHECK-LABEL: name: coalesce_dont_add_implicitdef_or_undef
+ ; CHECK: bb.0:
+ ; CHECK-NEXT: successors: %bb.1(0x80000000)
+ ; CHECK-NEXT: liveins: $eflags, $edx
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: undef [[COPY:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = COPY $edx
+ ; CHECK-NEXT: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 4, implicit $eflags
+ ; CHECK-NEXT: JMP_1 %bb.1
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.1:
+ ; CHECK-NEXT: [[COPY:%[0-9]+]].sub_8bit:gr64_with_sub_8bit = COPY [[SETCCr]]
+ ; CHECK-NEXT: FAKE_USE [[COPY]]
+ ; CHECK-NEXT: RET 0
+ bb.0:
+ liveins: $eflags, $edx
+ %0:gr32 = COPY $edx
+ %1:gr8 = SETCCr 4, implicit killed $eflags
+ JMP_1 %bb.1
+
+ bb.1:
+ %0.sub_8bit:gr32 = COPY %1
+ %2:gr64_with_sub_8bit = SUBREG_TO_REG 0, killed %0, %subreg.sub_32bit
+ FAKE_USE %2
+ RET 0
+...
+
+---
+name: coalesce_mov32r0_into_subreg_to_reg64_physreg_def
+frameInfo:
+ adjustsStack: true
+tracksRegLiveness: true
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: coalesce_mov32r0_into_subreg_to_reg64_physreg_def
+ ; CHECK: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: dead $edi = MOV32r0 implicit-def dead $eflags, implicit-def $rdi
+ ; CHECK-NEXT: CALL64r killed $rdi, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: RET 0
+ ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ %0:gr32 = MOV32r0 implicit-def dead $eflags
+ $rdi = SUBREG_TO_REG 0, killed %0, %subreg.sub_32bit
+ CALL64r killed $rdi, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ RET 0
+
+...
+
+---
+name: coalesce_mov32r0_into_subreg_to_reg64_physreg_use
+frameInfo:
+ adjustsStack: true
+tracksRegLiveness: true
+body: |
+ bb.0:
+ liveins: $eax
+ ; CHECK-LABEL: name: coalesce_mov32r0_into_subreg_to_reg64_physreg_use
+ ; CHECK: liveins: $eax
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: $eax = MOV32r0 implicit-def dead $eflags
+ ; CHECK-NEXT: [[SUBREG_TO_REG:%[0-9]+]]:gr64 = SUBREG_TO_REG 0, $eax, %subreg.sub_32bit
+ ; CHECK-NEXT: $rdi = COPY [[SUBREG_TO_REG]]
+ ; CHECK-NEXT: CALL64r [[SUBREG_TO_REG]], csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: RET 0
+ ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ $eax = MOV32r0 implicit-def dead $eflags
+ %1:gr64 = SUBREG_TO_REG 0, killed $eax, %subreg.sub_32bit
+ $rdi = COPY %1
+ CALL64r killed %1, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ RET 0
+
+...
+
+# Coalesced instruction is a copy with other implicit operands
+---
+name: coalesce_copy_into_subreg_to_reg64
+frameInfo:
+ adjustsStack: true
+tracksRegLiveness: true
+body: |
+ bb.0:
+ liveins: $eax
+ ; CHECK-LABEL: name: coalesce_copy_into_subreg_to_reg64
+ ; CHECK: liveins: $eax
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: undef [[COPY:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = COPY $eax, implicit-def dead $eflags, implicit-def [[COPY]]
+ ; CHECK-NEXT: $rdi = COPY [[COPY]]
+ ; CHECK-NEXT: CALL64r [[COPY]], csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: RET 0
+ ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ %0:gr32 = COPY $eax, implicit-def dead $eflags
+ %1:gr64 = SUBREG_TO_REG 0, killed %0, %subreg.sub_32bit
+ $rdi = COPY %1
+ CALL64r killed %1, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ RET 0
+
+...
+
+---
+name: coalesce_mov32r0_into_subreg_to_reg64_multiple_redef_value
+frameInfo:
+ adjustsStack: true
+tracksRegLiveness: true
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: coalesce_mov32r0_into_subreg_to_reg64_multiple_redef_value
+ ; CHECK: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: undef [[MOV32r0_:%[0-9]+]].sub_32bit:gr64_with_sub_8bit = MOV32r0 implicit-def dead $eflags
+ ; CHECK-NEXT: INLINEASM &"", 0 /* attdialect */, implicit-def undef [[MOV32r0_]].sub_32bit, implicit [[MOV32r0_]].sub_32bit, implicit-def [[MOV32r0_]]
+ ; CHECK-NEXT: $rdi = COPY [[MOV32r0_]]
+ ; CHECK-NEXT: CALL64r [[MOV32r0_]], csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: RET 0
+ ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ %0:gr32 = MOV32r0 implicit-def dead $eflags
+ INLINEASM &"", 0, implicit-def %0, implicit %0
+ %1:gr64 = SUBREG_TO_REG 0, killed %0, %subreg.sub_32bit
+ $rdi = COPY %1
+ CALL64r killed %1, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ RET 0
+
+...
+
+---
+name: coalesce_mov32r0_into_subreg_to_reg64_def_is_block_liveout
+frameInfo:
+ adjustsStack: true
+tracksRegLiveness: true
+body: |
+ ; CHECK-LABEL: name: coalesce_mov32r0_into_subreg_to_reg64_def_is_block_liveout
+ ; CHECK: bb.0:
+ ; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: INLINEASM &"", 0 /* attdialect */, implicit-def undef %1.sub_32bit, implicit-def %1
+ ; CHECK-NEXT: JCC_1 %bb.1, 4, implicit undef $eflags
+ ; CHECK-NEXT: JMP_1 %bb.2
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.1:
+ ; CHECK-NEXT: $rdi = COPY %1
+ ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: CALL64r %1, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: RET 0
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.2:
+ bb.0:
+ INLINEASM &"", 0, implicit-def %0:gr32
+ JCC_1 %bb.1, 4, implicit undef $eflags
+ JMP_1 %bb.2
+
+ bb.1:
+ %1:gr64 = SUBREG_TO_REG 0, killed %0, %subreg.sub_32bit
+ $rdi = COPY %1
+ ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ CALL64r killed %1, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ RET 0
+
+ bb.2:
+
+...
+
+---
+name: coalesce_mov32r0_into_subreg_to_reg64_def_is_phi_def
+frameInfo:
+ adjustsStack: true
+tracksRegLiveness: true
+body: |
+ ; CHECK-LABEL: name: coalesce_mov32r0_into_subreg_to_reg64_def_is_phi_def
+ ; CHECK: bb.0:
+ ; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: INLINEASM &"", 0 /* attdialect */, implicit-def undef %1.sub_32bit, implicit-def %1
+ ; CHECK-NEXT: JCC_1 %bb.1, 4, implicit undef $eflags
+ ; CHECK-NEXT: JMP_1 %bb.2
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.1:
+ ; CHECK-NEXT: successors: %bb.1(0x80000000)
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: $rdi = COPY %1
+ ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: CALL64r %1, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ ; CHECK-NEXT: JMP_1 %bb.1
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.2:
+ bb.0:
+
+ INLINEASM &"", 0, implicit-def %0:gr32
+ JCC_1 %bb.1, 4, implicit undef $eflags
+ JMP_1 %bb.2
+
+ bb.1:
+ %1:gr64 = SUBREG_TO_REG 0, %0, %subreg.sub_32bit
+ $rdi = COPY %1
+ ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ CALL64r %1, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
+ ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
+ JMP_1 %bb.1
+
+ bb.2:
+
+...
generated by cgit v1.1 at 2025-08-02 16:22:10 +0000