1ccc49924a
D79164/2596da31740f changed getCFInstrCost to return 1 per default.
AArch64 did not have its own implementation, hence the throughput cost
of CFI instructions is overestimated. On most cores, most branches should
be predicated and essentially free throughput wise.
This restores a 9% performance regression on a SPEC2006 benchmark on
AArch64 with -O3 LTO & PGO.
This patch effectively restores pre 2596da3174 behavior for AArch64
and undoes the AArch64 test changes of the patch.
Reviewers: samparker, dmgreen, anemet
Reviewed By: samparker
Differential Revision: https://reviews.llvm.org/D82755
53 lines
4.0 KiB
LLVM
53 lines
4.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
|
|
; RUN: opt -cost-model -analyze -mtriple=aarch64-- < %s | FileCheck %s --check-prefix=CHECK-THROUGHPUT
|
|
; RUN: opt -cost-model -analyze -cost-kind=code-size -mtriple=aarch64-- < %s | FileCheck %s --check-prefix=CHECK-SIZE
|
|
|
|
define i32 @cmps() {
|
|
; CHECK-THROUGHPUT-LABEL: 'cmps'
|
|
; CHECK-THROUGHPUT-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a0 = icmp slt i8 undef, undef
|
|
; CHECK-THROUGHPUT-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a1 = icmp ult i16 undef, undef
|
|
; CHECK-THROUGHPUT-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a2 = icmp sge i32 undef, undef
|
|
; CHECK-THROUGHPUT-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a3 = icmp ne i64 undef, undef
|
|
; CHECK-THROUGHPUT-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a4 = icmp slt <16 x i8> undef, undef
|
|
; CHECK-THROUGHPUT-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a5 = icmp ult <8 x i16> undef, undef
|
|
; CHECK-THROUGHPUT-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a6 = icmp sge <4 x i32> undef, undef
|
|
; CHECK-THROUGHPUT-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a7 = fcmp oge half undef, undef
|
|
; CHECK-THROUGHPUT-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a8 = fcmp ogt float undef, undef
|
|
; CHECK-THROUGHPUT-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a9 = fcmp ogt double undef, undef
|
|
; CHECK-THROUGHPUT-NEXT: Cost Model: Found an estimated cost of 29 for instruction: %a10 = fcmp olt <8 x half> undef, undef
|
|
; CHECK-THROUGHPUT-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a11 = fcmp oge <4 x float> undef, undef
|
|
; CHECK-THROUGHPUT-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a12 = fcmp oge <2 x double> undef, undef
|
|
; CHECK-THROUGHPUT-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret i32 undef
|
|
;
|
|
; CHECK-SIZE-LABEL: 'cmps'
|
|
; CHECK-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a0 = icmp slt i8 undef, undef
|
|
; CHECK-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a1 = icmp ult i16 undef, undef
|
|
; CHECK-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a2 = icmp sge i32 undef, undef
|
|
; CHECK-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a3 = icmp ne i64 undef, undef
|
|
; CHECK-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a4 = icmp slt <16 x i8> undef, undef
|
|
; CHECK-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a5 = icmp ult <8 x i16> undef, undef
|
|
; CHECK-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a6 = icmp sge <4 x i32> undef, undef
|
|
; CHECK-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a7 = fcmp oge half undef, undef
|
|
; CHECK-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a8 = fcmp ogt float undef, undef
|
|
; CHECK-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a9 = fcmp ogt double undef, undef
|
|
; CHECK-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a10 = fcmp olt <8 x half> undef, undef
|
|
; CHECK-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a11 = fcmp oge <4 x float> undef, undef
|
|
; CHECK-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %a12 = fcmp oge <2 x double> undef, undef
|
|
; CHECK-SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 undef
|
|
;
|
|
%a0 = icmp slt i8 undef, undef
|
|
%a1 = icmp ult i16 undef, undef
|
|
%a2 = icmp sge i32 undef, undef
|
|
%a3 = icmp ne i64 undef, undef
|
|
%a4 = icmp slt <16 x i8> undef, undef
|
|
%a5 = icmp ult <8 x i16> undef, undef
|
|
%a6 = icmp sge <4 x i32> undef, undef
|
|
%a7 = fcmp oge half undef, undef
|
|
%a8 = fcmp ogt float undef, undef
|
|
%a9 = fcmp ogt double undef, undef
|
|
%a10 = fcmp olt <8 x half> undef, undef
|
|
%a11 = fcmp oge <4 x float> undef, undef
|
|
%a12 = fcmp oge <2 x double> undef, undef
|
|
ret i32 undef
|
|
}
|