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llvm-project/llvm/test/CodeGen/ARM/no-arm-mode.ll

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[ARM] Emit error when ARM exec mode is not available. Summary: A similar error message has been removed from the ARMTargetMachineBase constructor in r306939. With this patch, we generate an error message for the example below, compiled with -mcpu=cortex-m0, which does not have ARM execution mode. __attribute__((target("arm"))) int foo(int a, int b) { return a + b % a; } __attribute__((target("thumb"))) int bar(int a, int b) { return a + b % a; } By adding this error message to ARMBaseTargetMachine::getSubtargetImpl, we can deal with functions that set -thumb-mode in target-features. At the moment it seems like Clang does not have access to target-feature specific information, so adding the error message to the frontend will be harder. Reviewers: echristo, richard.barton.arm, t.p.northover, rengolin, efriedma Reviewed By: echristo, efriedma Subscribers: efriedma, aemerson, javed.absar, kristof.beyls Differential Revision: https://reviews.llvm.org/D35627 llvm-svn: 310486
2017-08-09 23:39:10 +08:00
; RUN: not llc -mtriple=armv7-windows-itanium -mcpu=cortex-a9 -o /dev/null %s 2>&1 \
; RUN: | FileCheck %s -check-prefixes=CHECK-OPTIONS,CHECK-FEATURE
; RUN: not llc -mtriple=thumb-unknown-linux -mcpu=cortex-m0 -o /dev/null %s 2>&1 \
; RUN: | FileCheck %s -check-prefix=CHECK-FEATURE
define void @foo() {
entry:
ret void
}
; CHECK-OPTIONS: Function 'foo' uses ARM instructions, but the target does not support ARM mode execution.
define void @no_thumb_mode_feature() #0 {
entry:
ret void
}
; CHECK-FEATURE: Function 'no_thumb_mode_feature' uses ARM instructions, but the target does not support ARM mode execution.
attributes #0 = { "target-features"="-thumb-mode" }