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llvm-project/llvm/test/CodeGen/X86/fast-isel-fold-mem.ll

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[FastISel][X86] Add MachineMemOperand to load/store instructions. This commit adds MachineMemOperands to load and store instructions. This allows the peephole optimizer to fold load instructions. Unfortunatelly the peephole optimizer currently doesn't run at -O0. llvm-svn: 210858
2014-06-13 07:27:57 +08:00
; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s
Change the fast-isel-abort option from bool to int to enable "levels" 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> llvm-svn: 230775
2015-02-28 02:32:11 +08:00
; RUN: llc < %s -fast-isel -fast-isel-abort=1 -mtriple=x86_64-apple-darwin | FileCheck %s
[FastISel][X86] Add MachineMemOperand to load/store instructions. This commit adds MachineMemOperands to load and store instructions. This allows the peephole optimizer to fold load instructions. Unfortunatelly the peephole optimizer currently doesn't run at -O0. llvm-svn: 210858
2014-06-13 07:27:57 +08:00
define i64 @fold_load(i64* %a, i64 %b) {
; CHECK-LABEL: fold_load
; CHECK: addq (%rdi), %rsi
; CHECK-NEXT: movq %rsi, %rax
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%1 = load i64, i64* %a, align 8
[FastISel][X86] Add MachineMemOperand to load/store instructions. This commit adds MachineMemOperands to load and store instructions. This allows the peephole optimizer to fold load instructions. Unfortunatelly the peephole optimizer currently doesn't run at -O0. llvm-svn: 210858
2014-06-13 07:27:57 +08:00
%2 = add i64 %1, %b
ret i64 %2
}