forked from OSchip/llvm-project
198 lines
11 KiB
LLVM
198 lines
11 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=aarch64 -mattr=+sve < %s | FileCheck %s
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; Check that a tail call from an SVE function to another SVE function
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; can use a tail-call, as the same registers will be preserved by the
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; callee.
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define <vscale x 4 x i32> @sve_caller_sve_callee() nounwind {
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; CHECK-LABEL: sve_caller_sve_callee:
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; CHECK: // %bb.0:
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; CHECK-NEXT: str x29, [sp, #-16]! // 8-byte Folded Spill
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; CHECK-NEXT: addvl sp, sp, #-2
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; CHECK-NEXT: str z10, [sp] // 16-byte Folded Spill
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; CHECK-NEXT: str z9, [sp, #1, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: //APP
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; CHECK-NEXT: //NO_APP
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; CHECK-NEXT: ldr z10, [sp] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z9, [sp, #1, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: addvl sp, sp, #2
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; CHECK-NEXT: ldr x29, [sp], #16 // 8-byte Folded Reload
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; CHECK-NEXT: b sve_callee
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tail call void asm sideeffect "", "~{z9},~{z10}"()
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%call = tail call <vscale x 4 x i32> @sve_callee()
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ret <vscale x 4 x i32> %call
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}
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define <vscale x 4 x i32> @sve_caller_sve_callee_fastcc() nounwind {
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; CHECK-LABEL: sve_caller_sve_callee_fastcc:
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; CHECK: // %bb.0:
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; CHECK-NEXT: str x29, [sp, #-16]! // 8-byte Folded Spill
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; CHECK-NEXT: addvl sp, sp, #-2
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; CHECK-NEXT: str z10, [sp] // 16-byte Folded Spill
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; CHECK-NEXT: str z9, [sp, #1, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: //APP
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; CHECK-NEXT: //NO_APP
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; CHECK-NEXT: ldr z10, [sp] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z9, [sp, #1, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: addvl sp, sp, #2
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; CHECK-NEXT: ldr x29, [sp], #16 // 8-byte Folded Reload
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; CHECK-NEXT: b sve_callee
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tail call void asm sideeffect "", "~{z9},~{z10}"()
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%call = tail call fastcc <vscale x 4 x i32> @sve_callee()
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ret <vscale x 4 x i32> %call
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}
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declare <vscale x 4 x i32> @sve_callee()
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; Check that a tail call from an SVE function to a non-SVE function
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; does not use a tail-call, because after the call many of the SVE
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; registers may be clobbered and needs to be restored.
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define i32 @sve_caller_non_sve_callee(<vscale x 4 x i32> %arg) nounwind {
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; CHECK-LABEL: sve_caller_non_sve_callee:
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; CHECK: // %bb.0:
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; CHECK-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
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; CHECK-NEXT: addvl sp, sp, #-18
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; CHECK-NEXT: str p15, [sp, #4, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p14, [sp, #5, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p13, [sp, #6, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p12, [sp, #7, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p11, [sp, #8, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p10, [sp, #9, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p9, [sp, #10, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p8, [sp, #11, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p7, [sp, #12, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p6, [sp, #13, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p5, [sp, #14, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p4, [sp, #15, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str z23, [sp, #2, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z22, [sp, #3, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z21, [sp, #4, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z20, [sp, #5, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z19, [sp, #6, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z18, [sp, #7, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z17, [sp, #8, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z16, [sp, #9, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z15, [sp, #10, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z14, [sp, #11, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z13, [sp, #12, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z12, [sp, #13, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z11, [sp, #14, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z10, [sp, #15, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z9, [sp, #16, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z8, [sp, #17, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: //APP
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; CHECK-NEXT: //NO_APP
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; CHECK-NEXT: bl non_sve_callee
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; CHECK-NEXT: ldr p15, [sp, #4, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p14, [sp, #5, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p13, [sp, #6, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p12, [sp, #7, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p11, [sp, #8, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p10, [sp, #9, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p9, [sp, #10, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p8, [sp, #11, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p7, [sp, #12, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p6, [sp, #13, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p5, [sp, #14, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p4, [sp, #15, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr z23, [sp, #2, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z22, [sp, #3, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z21, [sp, #4, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z20, [sp, #5, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z19, [sp, #6, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z18, [sp, #7, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z17, [sp, #8, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z16, [sp, #9, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z15, [sp, #10, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z14, [sp, #11, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z13, [sp, #12, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z12, [sp, #13, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z11, [sp, #14, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z10, [sp, #15, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z9, [sp, #16, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z8, [sp, #17, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: addvl sp, sp, #18
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; CHECK-NEXT: ldp x29, x30, [sp], #16 // 16-byte Folded Reload
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; CHECK-NEXT: ret
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tail call void asm sideeffect "", "~{z9},~{z10}"()
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%call = tail call i32 @non_sve_callee()
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ret i32 %call
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}
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; Check that a tail call from an SVE function to a non-SVE function
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; does not use a tail-call, because after the call many of the SVE
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; registers may be clobbered and needs to be restored.
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define i32 @sve_caller_non_sve_callee_fastcc(<vscale x 4 x i32> %arg) nounwind {
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; CHECK-LABEL: sve_caller_non_sve_callee_fastcc:
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; CHECK: // %bb.0:
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; CHECK-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
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; CHECK-NEXT: addvl sp, sp, #-18
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; CHECK-NEXT: str p15, [sp, #4, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p14, [sp, #5, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p13, [sp, #6, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p12, [sp, #7, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p11, [sp, #8, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p10, [sp, #9, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p9, [sp, #10, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p8, [sp, #11, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p7, [sp, #12, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p6, [sp, #13, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p5, [sp, #14, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str p4, [sp, #15, mul vl] // 2-byte Folded Spill
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; CHECK-NEXT: str z23, [sp, #2, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z22, [sp, #3, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z21, [sp, #4, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z20, [sp, #5, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z19, [sp, #6, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z18, [sp, #7, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z17, [sp, #8, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z16, [sp, #9, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z15, [sp, #10, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z14, [sp, #11, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z13, [sp, #12, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z12, [sp, #13, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z11, [sp, #14, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z10, [sp, #15, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z9, [sp, #16, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: str z8, [sp, #17, mul vl] // 16-byte Folded Spill
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; CHECK-NEXT: //APP
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; CHECK-NEXT: //NO_APP
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; CHECK-NEXT: bl non_sve_callee
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; CHECK-NEXT: ldr p15, [sp, #4, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p14, [sp, #5, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p13, [sp, #6, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p12, [sp, #7, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p11, [sp, #8, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p10, [sp, #9, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p9, [sp, #10, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p8, [sp, #11, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p7, [sp, #12, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p6, [sp, #13, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p5, [sp, #14, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr p4, [sp, #15, mul vl] // 2-byte Folded Reload
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; CHECK-NEXT: ldr z23, [sp, #2, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z22, [sp, #3, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z21, [sp, #4, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z20, [sp, #5, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z19, [sp, #6, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z18, [sp, #7, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z17, [sp, #8, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z16, [sp, #9, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z15, [sp, #10, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z14, [sp, #11, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z13, [sp, #12, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z12, [sp, #13, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z11, [sp, #14, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z10, [sp, #15, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z9, [sp, #16, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: ldr z8, [sp, #17, mul vl] // 16-byte Folded Reload
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; CHECK-NEXT: addvl sp, sp, #18
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; CHECK-NEXT: ldp x29, x30, [sp], #16 // 16-byte Folded Reload
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; CHECK-NEXT: ret
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tail call void asm sideeffect "", "~{z9},~{z10}"()
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%call = tail call fastcc i32 @non_sve_callee()
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ret i32 %call
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}
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declare i32 @non_sve_callee()
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