1; REQUIRES: asserts 2; Test to ensure that the Unified LTO flag is set properly in the summary, and 3; that we emit the correct error when linking bitcode files with different 4; values of this flag. 5 6; Linking bitcode both without UnifiedLTO set should work 7; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t1 %s 8; RUN: llvm-bcanalyzer -dump %t1 | FileCheck %s --check-prefix=NOUNIFIEDLTO 9; RUN: llvm-dis -o - %t1 | FileCheck %s --check-prefix=NOUNIFIEDLTOFLAG 10; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t2 %s 11; RUN: llvm-bcanalyzer -dump %t2 | FileCheck %s --check-prefix=NOUNIFIEDLTO 12; RUN: llvm-dis -o - %t2 | FileCheck %s --check-prefix=NOUNIFIEDLTOFLAG 13; RUN: llvm-lto2 run -o %t3 %t1 %t2 14; RUN: not llvm-lto2 run --unified-lto=thin -o %t3 %t1 %t2 2>&1 | \ 15; RUN: FileCheck --allow-empty %s --check-prefix UNIFIEDERR 16 17; Linking bitcode with different values of UnifiedLTO should fail 18; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t1 %s 19; RUN: llvm-bcanalyzer -dump %t1 | FileCheck %s --check-prefix=NOUNIFIEDLTO 20; RUN: llvm-dis -o - %t1 | FileCheck %s --check-prefix=NOUNIFIEDLTOFLAG 21; RUN: opt -unified-lto -thinlto-bc -thinlto-split-lto-unit -o %t2 %s 22; RUN: llvm-bcanalyzer -dump %t2 | FileCheck %s --check-prefix=UNIFIEDLTO 23; RUN: llvm-dis -o - %t2 | FileCheck %s --check-prefix=UNIFIEDLTOFLAG 24; RUN: not llvm-lto2 run --unified-lto=thin -o %t3 %t1 %t2 2>&1 | \ 25; RUN: FileCheck --allow-empty %s --check-prefix UNIFIEDERR 26 27; Linking bitcode with identical Unified LTO flags should succeed 28; RUN: opt -unified-lto -thinlto-bc -thinlto-split-lto-unit -o %t1 %s 29; RUN: llvm-bcanalyzer -dump %t1 | FileCheck %s --check-prefix=UNIFIEDLTO 30; RUN: llvm-dis -o - %t1 | FileCheck %s --check-prefix=UNIFIEDLTOFLAG 31; RUN: opt -unified-lto -thinlto-bc -thinlto-split-lto-unit -o %t2 %s 32; RUN: llvm-bcanalyzer -dump %t2 | FileCheck %s --check-prefix=UNIFIEDLTO 33; RUN: llvm-dis -o - %t2 | FileCheck %s --check-prefix=UNIFIEDLTOFLAG 34; RUN: llvm-lto2 run --unified-lto=full --debug-only=lto -o %t3 %t1 %t2 2>&1 | \ 35; RUN: FileCheck --allow-empty %s --check-prefix NOUNIFIEDERR --check-prefix FULL 36; RUN: llvm-lto2 run --unified-lto=thin --debug-only=lto -o %t3 %t1 %t2 2>&1 | \ 37; RUN: FileCheck --allow-empty %s --check-prefix NOUNIFIEDERR --check-prefix THIN 38; RUN: llvm-lto2 run --debug-only=lto -o %t3 %t1 %t2 2>&1 | \ 39; RUN: FileCheck --allow-empty %s --check-prefix THIN 40 41; UNIFIEDERR: unified LTO compilation must use compatible bitcode modules 42; NOUNIFIEDERR-NOT: unified LTO compilation must use compatible bitcode modules 43 44; The flag should be set when UnifiedLTO is enabled 45; UNIFIEDLTO: <FLAGS op0=520/> 46; NOUNIFIEDLTO: <FLAGS op0=8/> 47 48; Check that the corresponding module flag is set when expected. 49; UNIFIEDLTOFLAG: !{i32 1, !"UnifiedLTO", i32 1} 50; NOUNIFIEDLTOFLAG-NOT: !{i32 1, !"UnifiedLTO", i32 1} 51 52; FULL: Running regular LTO 53; THIN: Running ThinLTO 54 55target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 56target triple = "x86_64-unknown-linux-gnu" 57