8ab917a241
The original version of this change inadvertently dropped b6e19b35cd87f3167a0f04a61a12016b935ab1ea. This version retains that fix as well as adding tests for it and an explanation for why it is needed.
104 lines
3.7 KiB
LLVM
104 lines
3.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=mips64-unknown-freebsd -O0 -o - %s | FileCheck %s
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; Previously SelectionDAGBuilder would always set alignment to 1 for hidden sret
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; parameters so we were generating ldl+ldr/lwl+lwr to load those values even
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; though we know that they are aligned (since we allocated an aligned frame index)
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declare dso_local void @use_sret(i32, i128, i64) unnamed_addr
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declare dso_local { i32, i128, i64 } @implicit_sret_decl() unnamed_addr
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define internal void @test() unnamed_addr nounwind {
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; CHECK-LABEL: test:
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; CHECK: # %bb.0: # %start
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; CHECK-NEXT: daddiu $sp, $sp, -64
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; CHECK-NEXT: sd $ra, 56($sp) # 8-byte Folded Spill
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; CHECK-NEXT: daddiu $4, $sp, 0
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; CHECK-NEXT: jal implicit_sret_decl
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; CHECK-NEXT: nop
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; CHECK-NEXT: ld $6, 24($sp)
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; CHECK-NEXT: ld $5, 16($sp)
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; CHECK-NEXT: ld $7, 32($sp)
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; CHECK-NEXT: lw $4, 0($sp)
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; CHECK-NEXT: jal use_sret
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; CHECK-NEXT: nop
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; CHECK-NEXT: ld $ra, 56($sp) # 8-byte Folded Reload
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; CHECK-NEXT: daddiu $sp, $sp, 64
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; CHECK-NEXT: jr $ra
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; CHECK-NEXT: nop
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start:
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%0 = call { i32, i128, i64 } @implicit_sret_decl()
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%1 = extractvalue { i32, i128, i64 } %0, 0
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%2 = extractvalue { i32, i128, i64 } %0, 1
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%3 = extractvalue { i32, i128, i64 } %0, 2
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call void @use_sret(i32 %1, i128 %2, i64 %3)
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ret void
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}
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define internal { i32, i128, i64 } @implicit_sret_impl() unnamed_addr nounwind {
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; CHECK-LABEL: implicit_sret_impl:
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; CHECK: # %bb.0:
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; CHECK-NEXT: # kill: def $at_64 killed $a0_64
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; CHECK-NEXT: daddiu $1, $zero, 20
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; CHECK-NEXT: sd $1, 24($4)
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; CHECK-NEXT: daddiu $1, $zero, 0
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; CHECK-NEXT: sd $zero, 16($4)
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; CHECK-NEXT: daddiu $1, $zero, 30
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; CHECK-NEXT: sd $1, 32($4)
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; CHECK-NEXT: addiu $1, $zero, 10
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; CHECK-NEXT: sw $1, 0($4)
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; CHECK-NEXT: jr $ra
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; CHECK-NEXT: nop
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ret { i32, i128, i64 } { i32 10, i128 20, i64 30 }
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}
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declare dso_local { i32, i32, i32, i32, i32, i32 } @implicit_sret_decl2() unnamed_addr
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declare dso_local void @use_sret2(i32, i32, i32) unnamed_addr
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define internal void @test2() unnamed_addr nounwind {
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; CHECK-LABEL: test2:
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; CHECK: # %bb.0: # %start
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; CHECK-NEXT: daddiu $sp, $sp, -32
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; CHECK-NEXT: sd $ra, 24($sp) # 8-byte Folded Spill
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; CHECK-NEXT: daddiu $4, $sp, 0
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; CHECK-NEXT: jal implicit_sret_decl2
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; CHECK-NEXT: nop
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; CHECK-NEXT: lw $6, 20($sp)
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; CHECK-NEXT: lw $5, 12($sp)
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; CHECK-NEXT: lw $4, 4($sp)
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; CHECK-NEXT: jal use_sret2
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; CHECK-NEXT: nop
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; CHECK-NEXT: ld $ra, 24($sp) # 8-byte Folded Reload
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; CHECK-NEXT: daddiu $sp, $sp, 32
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; CHECK-NEXT: jr $ra
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; CHECK-NEXT: nop
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start:
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%0 = call { i32, i32, i32, i32, i32, i32 } @implicit_sret_decl2()
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%1 = extractvalue { i32, i32, i32, i32, i32, i32 } %0, 1
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%2 = extractvalue { i32, i32, i32, i32, i32, i32 } %0, 3
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%3 = extractvalue { i32, i32, i32, i32, i32, i32 } %0, 5
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call void @use_sret2(i32 %1, i32 %2, i32 %3)
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ret void
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}
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define internal { i32, i32, i32, i32, i32, i32 } @implicit_sret_impl2() unnamed_addr nounwind {
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; CHECK-LABEL: implicit_sret_impl2:
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; CHECK: # %bb.0:
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; CHECK-NEXT: # kill: def $at_64 killed $a0_64
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; CHECK-NEXT: addiu $1, $zero, 6
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; CHECK-NEXT: sw $1, 20($4)
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; CHECK-NEXT: addiu $1, $zero, 5
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; CHECK-NEXT: sw $1, 16($4)
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; CHECK-NEXT: addiu $1, $zero, 4
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; CHECK-NEXT: sw $1, 12($4)
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; CHECK-NEXT: addiu $1, $zero, 3
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; CHECK-NEXT: sw $1, 8($4)
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; CHECK-NEXT: addiu $1, $zero, 2
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; CHECK-NEXT: sw $1, 4($4)
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; CHECK-NEXT: addiu $1, $zero, 1
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; CHECK-NEXT: sw $1, 0($4)
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; CHECK-NEXT: jr $ra
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; CHECK-NEXT: nop
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ret { i32, i32, i32, i32, i32, i32 } { i32 1, i32 2, i32 3, i32 4, i32 5, i32 6 }
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}
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