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aaaf36e835
Only re-generate an object file if the llvm IR (after IRGen) changed. The check is done based on a MD5 hash of the llvm IR which is stored in a special section in the object file. This reduces compilation time for multi-threaded whole module compilation if only a small number of files are changed. The incremental compilation also works for compilations with a single output file. In this case it's all-or-nothing.
70 lines
2.8 KiB
Swift
70 lines
2.8 KiB
Swift
// RUN: rm -rf %t && mkdir -p %t
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// Test with a single output file
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// RUN: echo "single-threaded initial" >%t/log
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// RUN: %target-swift-frontend -O -wmo %s %S/Inputs/simple.swift -module-name=test -c -o %t/test.o -Xllvm -debug-only=irgen 2>>%t/log
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// CHECK-LABEL: single-threaded initial
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// CHECK: test.o: MD5=[[TEST_MD5:[0-9a-f]+]]
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// CHECK-NOT: prev MD5
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// RUN: echo "single-threaded same compilation" >>%t/log
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// RUN: %target-swift-frontend -O -wmo %s %S/Inputs/simple.swift -module-name=test -c -o %t/test.o -Xllvm -debug-only=irgen 2>>%t/log
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// CHECK-LABEL: single-threaded same compilation
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// CHECK: test.o: MD5=[[TEST_MD5]]
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// CHECK: test.o: prev MD5=[[TEST_MD5]] skipping
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// RUN: echo "single-threaded file changed" >>%t/log
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// RUN: %target-swift-frontend -O -wmo %s %S/Inputs/simple2.swift -module-name=test -c -o %t/test.o -Xllvm -debug-only=irgen 2>>%t/log
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// CHECK-LABEL: single-threaded file changed
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// CHECK: test.o: MD5=[[TEST2_MD5:[0-9a-f]+]]
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// CHECK: test.o: prev MD5=[[TEST_MD5]] recompiling
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// RUN: echo "single-threaded option changed" >>%t/log
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// RUN: %target-swift-frontend -O -wmo %s %S/Inputs/simple2.swift -disable-llvm-optzns -module-name=test -c -o %t/test.o -Xllvm -debug-only=irgen 2>>%t/log
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// CHECK-LABEL: single-threaded option changed
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// CHECK: test.o: MD5=[[TEST3_MD5:[0-9a-f]+]]
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// CHECK: test.o: prev MD5=[[TEST2_MD5]] recompiling
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// Test with multiple output files
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// RUN: echo "multi-threaded initial" >>%t/log
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// RUN: %target-swift-frontend -O -wmo -num-threads 2 %s %S/Inputs/simple.swift -module-name=test -c -o %t/test.o -o %t/simple.o -Xllvm -debug-only=irgen 2>>%t/log
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// CHECK-LABEL: multi-threaded initial
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// CHECK-DAG: test.o: MD5=[[TEST4_MD5:[0-9a-f]+]]
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// CHECK-DAG: test.o: prev MD5=[[TEST3_MD5]] recompiling
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// CHECK-DAG: simple.o: MD5=[[SIMPLE_MD5:[0-9a-f]+]]
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// RUN: echo "multi-threaded same compilation" >>%t/log
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// RUN: %target-swift-frontend -O -wmo -num-threads 2 %s %S/Inputs/simple.swift -module-name=test -c -o %t/test.o -o %t/simple.o -Xllvm -debug-only=irgen 2>>%t/log
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// CHECK-LABEL: multi-threaded same compilation
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// CHECK-DAG: test.o: MD5=[[TEST4_MD5]]
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// CHECK-DAG: test.o: prev MD5=[[TEST4_MD5]] skipping
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// CHECK-DAG: simple.o: MD5=[[SIMPLE_MD5]]
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// CHECK-DAG: simple.o: prev MD5=[[SIMPLE_MD5]] skipping
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// RUN: echo "multi-threaded one file changed" >>%t/log
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// RUN: %target-swift-frontend -O -wmo -num-threads 2 %s %S/Inputs/simple2.swift -module-name=test -c -o %t/test.o -o %t/simple.o -Xllvm -debug-only=irgen 2>>%t/log
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// CHECK-LABEL: multi-threaded one file changed
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// CHECK-DAG: test.o: MD5=[[TEST4_MD5]]
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// CHECK-DAG: test.o: prev MD5=[[TEST4_MD5]] skipping
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// CHECK-DAG: simple.o: MD5=[[SIMPLE2_MD5:[0-9a-f]+]]
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// CHECK-DAG: simple.o: prev MD5=[[SIMPLE_MD5]] recompiling
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// RUN: FileCheck %s < %t/log
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// REQUIRES: asserts
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public func test_func1() {
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print("Hello")
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}
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