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[RISCV] Support register allocation for GHC when f/d is not specified…
… in the architecture This patch supports register allocation for floating-point types when `zfinx` and `zdinx` is specified in the architecture for the GHC calling convention. Reviewed By: craig.topper Differential Revision: https://reviews.llvm.org/D155910
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2 | ||
; RUN: llc -mtriple=riscv64 -mattr=+zfinx,+zdinx < %s | FileCheck %s | ||
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; Check the GHC call convention works for zfinx, zdinx (rv64) | ||
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@f1 = external global float | ||
@f2 = external global float | ||
@f3 = external global float | ||
@f4 = external global float | ||
@f5 = external global float | ||
@f6 = external global float | ||
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define ghccc void @caller_float() nounwind { | ||
; CHECK-LABEL: caller_float: | ||
; CHECK: # %bb.0: # %entry | ||
; CHECK-NEXT: lui a0, %hi(f6) | ||
; CHECK-NEXT: lw s6, %lo(f6)(a0) | ||
; CHECK-NEXT: lui a0, %hi(f5) | ||
; CHECK-NEXT: lw s5, %lo(f5)(a0) | ||
; CHECK-NEXT: lui a0, %hi(f4) | ||
; CHECK-NEXT: lw s4, %lo(f4)(a0) | ||
; CHECK-NEXT: lui a0, %hi(f3) | ||
; CHECK-NEXT: lw s3, %lo(f3)(a0) | ||
; CHECK-NEXT: lui a0, %hi(f2) | ||
; CHECK-NEXT: lw s2, %lo(f2)(a0) | ||
; CHECK-NEXT: lui a0, %hi(f1) | ||
; CHECK-NEXT: lw s1, %lo(f1)(a0) | ||
; CHECK-NEXT: tail callee_float@plt | ||
entry: | ||
%0 = load float, ptr @f6 | ||
%1 = load float, ptr @f5 | ||
%2 = load float, ptr @f4 | ||
%3 = load float, ptr @f3 | ||
%4 = load float, ptr @f2 | ||
%5 = load float, ptr @f1 | ||
tail call ghccc void @callee_float(float %5, float %4, float %3, float %2, float %1, float %0) nounwind | ||
ret void | ||
} | ||
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declare ghccc void @callee_float(float, float, float, float, float, float) | ||
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@d1 = external global double | ||
@d2 = external global double | ||
@d3 = external global double | ||
@d4 = external global double | ||
@d5 = external global double | ||
@d6 = external global double | ||
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define ghccc void @caller_double() nounwind { | ||
; CHECK-LABEL: caller_double: | ||
; CHECK: # %bb.0: # %entry | ||
; CHECK-NEXT: lui a0, %hi(d6) | ||
; CHECK-NEXT: ld s6, %lo(d6)(a0) | ||
; CHECK-NEXT: lui a0, %hi(d5) | ||
; CHECK-NEXT: ld s5, %lo(d5)(a0) | ||
; CHECK-NEXT: lui a0, %hi(d4) | ||
; CHECK-NEXT: ld s4, %lo(d4)(a0) | ||
; CHECK-NEXT: lui a0, %hi(d3) | ||
; CHECK-NEXT: ld s3, %lo(d3)(a0) | ||
; CHECK-NEXT: lui a0, %hi(d2) | ||
; CHECK-NEXT: ld s2, %lo(d2)(a0) | ||
; CHECK-NEXT: lui a0, %hi(d1) | ||
; CHECK-NEXT: ld s1, %lo(d1)(a0) | ||
; CHECK-NEXT: tail callee_double@plt | ||
entry: | ||
%0 = load double, ptr @d6 | ||
%1 = load double, ptr @d5 | ||
%2 = load double, ptr @d4 | ||
%3 = load double, ptr @d3 | ||
%4 = load double, ptr @d2 | ||
%5 = load double, ptr @d1 | ||
tail call ghccc void @callee_double(double %5, double %4, double %3, double %2, double %1, double %0) nounwind | ||
ret void | ||
} | ||
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declare ghccc void @callee_double(double, double, double, double, double, double) |