llvm-project/llvm/test/CodeGen/X86/GlobalISel/select-leaf-constant.mir

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# RUN: llc -mtriple=i586-linux-gnu -mcpu=haswell -mattr=-slow-incdec -global-isel -run-pass=instruction-select %s -o - | FileCheck %s --check-prefix=CHECK
#
# This is necessary to test that attribute-based rule predicates work and that
# they properly reset between functions.
--- |
define i32 @const_i32_1() {
ret i32 1
}
define i32 @const_i32_1_optsize() #0 {
ret i32 1
}
define i32 @const_i32_1b() {
ret i32 1
}
define i32 @const_i32_1_optsizeb() #0 {
ret i32 1
}
attributes #0 = { optsize }
...
---
name: const_i32_1
legalized: true
regBankSelected: true
selected: false
# CHECK-LABEL: name: const_i32_1
# CHECK: registers:
# CHECK-NEXT: - { id: 0, class: gr32 }
registers:
- { id: 0, class: gpr }
# CHECK: body:
# CHECK: %0 = MOV32ri 1
body: |
bb.1 (%ir-block.0):
%0(s32) = G_CONSTANT i32 1
%eax = COPY %0(s32)
RET 0, implicit %eax
...
---
name: const_i32_1_optsize
legalized: true
regBankSelected: true
selected: false
# CHECK-LABEL: name: const_i32_1_optsize
# CHECK: registers:
# CHECK-NEXT: - { id: 0, class: gr32 }
registers:
- { id: 0, class: gpr }
# CHECK: body:
# CHECK: %0 = MOV32r1
body: |
bb.1 (%ir-block.0):
%0(s32) = G_CONSTANT i32 1
%eax = COPY %0(s32)
RET 0, implicit %eax
...
---
name: const_i32_1b
legalized: true
regBankSelected: true
selected: false
# CHECK-LABEL: name: const_i32_1b
# CHECK: registers:
# CHECK-NEXT: - { id: 0, class: gr32 }
registers:
- { id: 0, class: gpr }
# CHECK: body:
# CHECK: %0 = MOV32ri 1
body: |
bb.1 (%ir-block.0):
%0(s32) = G_CONSTANT i32 1
%eax = COPY %0(s32)
RET 0, implicit %eax
...
---
name: const_i32_1_optsizeb
legalized: true
regBankSelected: true
selected: false
# CHECK-LABEL: name: const_i32_1_optsizeb
# CHECK: registers:
# CHECK-NEXT: - { id: 0, class: gr32 }
registers:
- { id: 0, class: gpr }
# CHECK: body:
# CHECK: %0 = MOV32r1
body: |
bb.1 (%ir-block.0):
%0(s32) = G_CONSTANT i32 1
%eax = COPY %0(s32)
RET 0, implicit %eax
...