78f5d9cdba
Implement emitPrologue/emitEpilogue methods, determine/spill/restore callee saved registers functionality with test. Also implement lowering of the DYNAMIC_STACKALLOC/STACKSAVE/STACKRESTORE stack operations with tests.
50 lines
1.2 KiB
LLVM
50 lines
1.2 KiB
LLVM
; RUN: llc --mtriple=xtensa < %s | FileCheck %s
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declare i32 @external_function(i32)
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define i32 @test_call_external(i32 %a) nounwind {
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; CHECK-LABEL: test_call_external:
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; CHECK: # %bb.0:
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; CHECK: s32i a0, a1, 0
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; CHECK-NEXT: l32r a8, .LCPI0_0
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; CHECK-NEXT: callx0 a8
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; CHECK-NEXT: l32i a0, a1, 0
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; CHECK: ret
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%1 = call i32 @external_function(i32 %a)
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ret i32 %1
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}
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define i32 @defined_function(i32 %a) nounwind {
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; CHECK-LABEL: defined_function:
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; CHECK: # %bb.0:
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; CHECK-NEXT: addi a2, a2, 1
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; CHECK-NEXT: ret
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%1 = add i32 %a, 1
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ret i32 %1
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}
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define i32 @test_call_defined(i32 %a) nounwind {
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; CHECK-LABEL: test_call_defined:
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; CHECK: # %bb.0:
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; CHECK: s32i a0, a1, 0
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; CHECK-NEXT: l32r a8, .LCPI2_0
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; CHECK-NEXT: callx0 a8
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; CHECK-NEXT: l32i a0, a1, 0
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; CHECK: ret
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%1 = call i32 @defined_function(i32 %a) nounwind
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ret i32 %1
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}
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define i32 @test_call_indirect(ptr %a, i32 %b) nounwind {
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; CHECK-LABEL: test_call_indirect:
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; CHECK: # %bb.0:
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; CHECK: s32i a0, a1, 0
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; CHECK-NEXT: or a8, a2, a2
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; CHECK-NEXT: or a2, a3, a3
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; CHECK-NEXT: callx0 a8
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; CHECK-NEXT: l32i a0, a1, 0
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; CHECK: ret
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%1 = call i32 %a(i32 %b)
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ret i32 %1
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}
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