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builder, compiler: compile and cache packages in parallel

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This commit switches from the previous behavior of compiling the whole
program at once, to compiling every package in parallel and linking the
LLVM bitcode files together for further whole-program optimization.
This is a small performance win, but it has several advantages in the
future:

  - There are many more things that can be done per package in parallel,
    avoiding the bottleneck at the end of the compiler phase. This
    should speed up the compiler futher.
  - This change is a necessary step towards a non-LTO build mode for
    fast incremental builds that only rebuild the changed package, when
    compiler speed is more important than binary size.
  - This change refactors the compiler in such a way that it will be
    easier to inspect the IR for one package only. Inspecting this IR
    will be very helpful for compiler developers.
This commit is contained in:
Ayke van Laethem
2021-01-31 20:52:18 +01:00
committed by Ron Evans
parent dc1ff80e10
commit e2f532709f
21 changed files with 404 additions and 189 deletions
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compiler/testdata/basic.ll
Vendored
+16 -14
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@@ -3,70 +3,72 @@ source_filename = "basic.go"
target datalayout = "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-f80:32-n8:16:32-S128"
target triple = "i686--linux"
define internal void @main.init(i8* %context, i8* %parentHandle) unnamed_addr {
declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
define hidden void @main.init(i8* %context, i8* %parentHandle) unnamed_addr {
entry:
ret void
}
define internal i32 @main.addInt(i32 %x, i32 %y, i8* %context, i8* %parentHandle) unnamed_addr {
define hidden i32 @main.addInt(i32 %x, i32 %y, i8* %context, i8* %parentHandle) unnamed_addr {
entry:
%0 = add i32 %x, %y
ret i32 %0
}
define internal i1 @main.equalInt(i32 %x, i32 %y, i8* %context, i8* %parentHandle) unnamed_addr {
define hidden i1 @main.equalInt(i32 %x, i32 %y, i8* %context, i8* %parentHandle) unnamed_addr {
entry:
%0 = icmp eq i32 %x, %y
ret i1 %0
}
define internal i1 @main.floatEQ(float %x, float %y, i8* %context, i8* %parentHandle) unnamed_addr {
define hidden i1 @main.floatEQ(float %x, float %y, i8* %context, i8* %parentHandle) unnamed_addr {
entry:
%0 = fcmp oeq float %x, %y
ret i1 %0
}
define internal i1 @main.floatNE(float %x, float %y, i8* %context, i8* %parentHandle) unnamed_addr {
define hidden i1 @main.floatNE(float %x, float %y, i8* %context, i8* %parentHandle) unnamed_addr {
entry:
%0 = fcmp une float %x, %y
ret i1 %0
}
define internal i1 @main.floatLower(float %x, float %y, i8* %context, i8* %parentHandle) unnamed_addr {
define hidden i1 @main.floatLower(float %x, float %y, i8* %context, i8* %parentHandle) unnamed_addr {
entry:
%0 = fcmp olt float %x, %y
ret i1 %0
}
define internal i1 @main.floatLowerEqual(float %x, float %y, i8* %context, i8* %parentHandle) unnamed_addr {
define hidden i1 @main.floatLowerEqual(float %x, float %y, i8* %context, i8* %parentHandle) unnamed_addr {
entry:
%0 = fcmp ole float %x, %y
ret i1 %0
}
define internal i1 @main.floatGreater(float %x, float %y, i8* %context, i8* %parentHandle) unnamed_addr {
define hidden i1 @main.floatGreater(float %x, float %y, i8* %context, i8* %parentHandle) unnamed_addr {
entry:
%0 = fcmp ogt float %x, %y
ret i1 %0
}
define internal i1 @main.floatGreaterEqual(float %x, float %y, i8* %context, i8* %parentHandle) unnamed_addr {
define hidden i1 @main.floatGreaterEqual(float %x, float %y, i8* %context, i8* %parentHandle) unnamed_addr {
entry:
%0 = fcmp oge float %x, %y
ret i1 %0
}
define internal float @main.complexReal(float %x.r, float %x.i, i8* %context, i8* %parentHandle) unnamed_addr {
define hidden float @main.complexReal(float %x.r, float %x.i, i8* %context, i8* %parentHandle) unnamed_addr {
entry:
ret float %x.r
}
define internal float @main.complexImag(float %x.r, float %x.i, i8* %context, i8* %parentHandle) unnamed_addr {
define hidden float @main.complexImag(float %x.r, float %x.i, i8* %context, i8* %parentHandle) unnamed_addr {
entry:
ret float %x.i
}
define internal { float, float } @main.complexAdd(float %x.r, float %x.i, float %y.r, float %y.i, i8* %context, i8* %parentHandle) unnamed_addr {
define hidden { float, float } @main.complexAdd(float %x.r, float %x.i, float %y.r, float %y.i, i8* %context, i8* %parentHandle) unnamed_addr {
entry:
%0 = fadd float %x.r, %y.r
%1 = fadd float %x.i, %y.i
@@ -75,7 +77,7 @@ entry:
ret { float, float } %3
}
define internal { float, float } @main.complexSub(float %x.r, float %x.i, float %y.r, float %y.i, i8* %context, i8* %parentHandle) unnamed_addr {
define hidden { float, float } @main.complexSub(float %x.r, float %x.i, float %y.r, float %y.i, i8* %context, i8* %parentHandle) unnamed_addr {
entry:
%0 = fsub float %x.r, %y.r
%1 = fsub float %x.i, %y.i
@@ -84,7 +86,7 @@ entry:
ret { float, float } %3
}
define internal { float, float } @main.complexMul(float %x.r, float %x.i, float %y.r, float %y.i, i8* %context, i8* %parentHandle) unnamed_addr {
define hidden { float, float } @main.complexMul(float %x.r, float %x.i, float %y.r, float %y.i, i8* %context, i8* %parentHandle) unnamed_addr {
entry:
%0 = fmul float %x.r, %y.r
%1 = fmul float %x.i, %y.i