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https://github.com/c64scene-ar/llvm-6502.git
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26d628d6ce
Summary: Currently fast-isel-abort will only abort for regular instructions, and just warn for function calls, terminators, function arguments. There is already fast-isel-abort-args but nothing for calls and terminators. This change turns the fast-isel-abort options into an integer option, so that multiple levels of strictness can be defined. This will help no being surprised when the "abort" option indeed does not abort, and enables the possibility to write test that verifies that no intrinsics are forgotten by fast-isel. Reviewers: resistor, echristo Subscribers: jfb, llvm-commits Differential Revision: http://reviews.llvm.org/D7941 From: Mehdi Amini <mehdi.amini@apple.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230775 91177308-0d34-0410-b5e6-96231b3b80d8
55 lines
1.1 KiB
LLVM
55 lines
1.1 KiB
LLVM
; RUN: llc -mtriple=aarch64-apple-darwin -O0 -fast-isel-abort=1 -verify-machineinstrs < %s
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; Test that we don't fold the shift.
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define i64 @fold_shift_test(i64 %a, i1 %c) {
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%1 = sub i64 %a, 8
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%2 = ashr i64 %1, 3
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br i1 %c, label %bb1, label %bb2
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bb1:
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%3 = icmp ult i64 0, %2
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br i1 %3, label %bb2, label %bb3
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bb2:
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ret i64 1
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bb3:
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ret i64 2
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}
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; Test that we don't fold the sign-extend.
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define i64 @fold_sext_test1(i32 %a, i1 %c) {
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%1 = sub i32 %a, 8
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%2 = sext i32 %1 to i64
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br i1 %c, label %bb1, label %bb2
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bb1:
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%3 = icmp ult i64 0, %2
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br i1 %3, label %bb2, label %bb3
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bb2:
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ret i64 1
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bb3:
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ret i64 2
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}
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; Test that we don't fold the sign-extend.
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define i64 @fold_sext_test2(i32 %a, i1 %c) {
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%1 = sub i32 %a, 8
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%2 = sext i32 %1 to i64
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br i1 %c, label %bb1, label %bb2
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bb1:
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%3 = shl i64 %2, 4
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ret i64 %3
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bb2:
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ret i64 %2
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}
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; Test that we clear the kill flag.
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define i32 @fold_kill_test(i32 %a) {
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%1 = sub i32 %a, 8
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%2 = shl i32 %1, 3
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%3 = icmp ult i32 0, %2
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br i1 %3, label %bb1, label %bb2
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bb1:
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ret i32 %2
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bb2:
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%4 = add i32 %2, 4
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ret i32 %4
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}
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