c0aa4b75a4
Summary: This patch improves Inliner to provide causes/reasons for negative inline decisions. 1. It adds one new message field to InlineCost to report causes for Always and Never instances. All Never and Always instantiations must provide a simple message. 2. Several functions that used to return the inlining results as boolean are changed to return InlineResult which carries the cause for negative decision. 3. Changed remark priniting and debug output messages to provide the additional messages and related inline cost. 4. Adjusted tests for changed printing. Patch by: yrouban (Yevgeny Rouban) Reviewers: craig.topper, sammccall, sgraenitz, NutshellySima, shchenz, chandlerc, apilipenko, javed.absar, tejohnson, dblaikie, sanjoy, eraman, xbolva00 Reviewed By: tejohnson, xbolva00 Subscribers: xbolva00, llvm-commits, arsenm, mehdi_amini, eraman, haicheng, steven_wu, dexonsmith Differential Revision: https://reviews.llvm.org/D49412 llvm-svn: 338969
114 lines
5.5 KiB
LLVM
114 lines
5.5 KiB
LLVM
; RUN: opt -S -inline -mtriple=arm-eabi -pass-remarks=.* -pass-remarks-missed=.* < %s 2>&1 | FileCheck %s -check-prefix=NOFP
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; RUN: opt -S -inline -mtriple=arm-eabi -mattr=+vfp2 -pass-remarks=.* -pass-remarks-missed=.* < %s 2>&1 | FileCheck %s -check-prefix=FULLFP
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; RUN: opt -S -inline -mtriple=arm-eabi -mattr=+vfp2,+fp-only-sp -pass-remarks=.* -pass-remarks-missed=.* < %s 2>&1 | FileCheck %s -check-prefix=SINGLEFP
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; Make sure that soft float implementations are calculated as being more expensive
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; to the inliner.
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; NOFP-DAG: single not inlined into test_single because too costly to inline (cost=125, threshold=75)
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; NOFP-DAG: single not inlined into test_single because too costly to inline (cost=125, threshold=75)
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; NOFP-DAG: single_cheap inlined into test_single_cheap with (cost=-15, threshold=75)
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; NOFP-DAG: single_cheap inlined into test_single_cheap with (cost=-15015, threshold=75)
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; NOFP-DAG: double not inlined into test_double because too costly to inline (cost=125, threshold=75)
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; NOFP-DAG: double not inlined into test_double because too costly to inline (cost=125, threshold=75)
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; NOFP-DAG: single_force_soft not inlined into test_single_force_soft because too costly to inline (cost=125, threshold=75)
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; NOFP-DAG: single_force_soft not inlined into test_single_force_soft because too costly to inline (cost=125, threshold=75)
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; FULLFP-DAG: single inlined into test_single with (cost=0, threshold=75)
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; FULLFP-DAG: single inlined into test_single with (cost=-15000, threshold=75)
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; FULLFP-DAG: single_cheap inlined into test_single_cheap with (cost=-15, threshold=75)
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; FULLFP-DAG: single_cheap inlined into test_single_cheap with (cost=-15015, threshold=75)
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; FULLFP-DAG: double inlined into test_double with (cost=0, threshold=75)
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; FULLFP-DAG: double inlined into test_double with (cost=-15000, threshold=75)
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; FULLFP-DAG: single_force_soft not inlined into test_single_force_soft because too costly to inline (cost=125, threshold=75)
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; FULLFP-DAG: single_force_soft not inlined into test_single_force_soft because too costly to inline (cost=125, threshold=75)
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; SINGLEFP-DAG: single inlined into test_single with (cost=0, threshold=75)
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; SINGLEFP-DAG: single inlined into test_single with (cost=-15000, threshold=75)
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; SINGLEFP-DAG: single_cheap inlined into test_single_cheap with (cost=-15, threshold=75)
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; SINGLEFP-DAG: single_cheap inlined into test_single_cheap with (cost=-15015, threshold=75)
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; SINGLEFP-DAG: double not inlined into test_double because too costly to inline (cost=125, threshold=75)
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; SINGLEFP-DAG: double not inlined into test_double because too costly to inline (cost=125, threshold=75)
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; SINGLEFP-DAG: single_force_soft not inlined into test_single_force_soft because too costly to inline (cost=125, threshold=75)
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; SINGLEFP-DAG: single_force_soft not inlined into test_single_force_soft because too costly to inline (cost=125, threshold=75)
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define i32 @test_single(i32 %a, i8 %b, i32 %c, i8 %d) #0 {
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%call = call float @single(i32 %a, i8 zeroext %b)
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%call2 = call float @single(i32 %c, i8 zeroext %d)
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ret i32 0
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}
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define i32 @test_single_cheap(i32 %a, i8 %b, i32 %c, i8 %d) #0 {
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%call = call float @single_cheap(i32 %a, i8 zeroext %b)
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%call2 = call float @single_cheap(i32 %c, i8 zeroext %d)
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ret i32 0
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}
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define i32 @test_double(i32 %a, i8 %b, i32 %c, i8 %d) #0 {
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%call = call double @double(i32 %a, i8 zeroext %b)
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%call2 = call double @double(i32 %c, i8 zeroext %d)
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ret i32 0
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}
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define i32 @test_single_force_soft(i32 %a, i8 %b, i32 %c, i8 %d) #1 {
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%call = call float @single_force_soft(i32 %a, i8 zeroext %b) #1
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%call2 = call float @single_force_soft(i32 %c, i8 zeroext %d) #1
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ret i32 0
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}
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define internal float @single(i32 %response, i8 zeroext %value1) #0 {
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entry:
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%conv = zext i8 %value1 to i32
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%sub = add nsw i32 %conv, -1
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%conv1 = sitofp i32 %sub to float
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%0 = tail call float @llvm.pow.f32(float 0x3FF028F5C0000000, float %conv1)
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%mul = fmul float %0, 2.620000e+03
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%conv2 = sitofp i32 %response to float
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%sub3 = fsub float %conv2, %mul
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%div = fdiv float %sub3, %mul
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ret float %div
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}
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define internal float @single_cheap(i32 %response, i8 zeroext %value1) #0 {
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entry:
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%conv = zext i8 %value1 to i32
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%sub = add nsw i32 %conv, -1
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%conv1 = bitcast i32 %sub to float
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%conv2 = bitcast i32 %response to float
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%0 = tail call float @llvm.pow.f32(float %conv2, float %conv1)
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%1 = tail call float @llvm.pow.f32(float %0, float %0)
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%2 = tail call float @llvm.pow.f32(float %1, float %1)
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ret float %2
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}
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define internal double @double(i32 %response, i8 zeroext %value1) #0 {
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entry:
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%conv = zext i8 %value1 to i32
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%sub = add nsw i32 %conv, -1
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%conv1 = sitofp i32 %sub to double
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%0 = tail call double @llvm.pow.f64(double 0x3FF028F5C0000000, double %conv1)
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%mul = fmul double %0, 2.620000e+03
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%conv2 = sitofp i32 %response to double
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%sub3 = fsub double %conv2, %mul
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%div = fdiv double %sub3, %mul
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ret double %div
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}
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define internal float @single_force_soft(i32 %response, i8 zeroext %value1) #1 {
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entry:
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%conv = zext i8 %value1 to i32
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%sub = add nsw i32 %conv, -1
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%conv1 = sitofp i32 %sub to float
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%0 = tail call float @llvm.pow.f32(float 0x3FF028F5C0000000, float %conv1)
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%mul = fmul float %0, 2.620000e+03
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%conv2 = sitofp i32 %response to float
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%sub3 = fsub float %conv2, %mul
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%div = fdiv float %sub3, %mul
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ret float %div
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}
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declare float @llvm.pow.f32(float, float) optsize minsize
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declare double @llvm.pow.f64(double, double) optsize minsize
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attributes #0 = { optsize }
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attributes #1 = { optsize "use-soft-float"="true" "target-features"="+soft-float" }
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