Author: Sjoerd Meijer Date: 2020-12-22T12:22:24Z New Revision: b9b62c28677d2c812604e29bab27c1e2a2144e4b
URL: https://github.com/llvm/llvm-project/commit/b9b62c28677d2c812604e29bab27c1e2a2144e4b DIFF: https://github.com/llvm/llvm-project/commit/b9b62c28677d2c812604e29bab27c1e2a2144e4b.diff LOG: [AArch64] Add a test for MachineLICM SinkIntoLoop. NFC. Added: llvm/test/CodeGen/AArch64/machine-licm-sink-instr.ll Modified: Removed: ################################################################################ diff --git a/llvm/test/CodeGen/AArch64/machine-licm-sink-instr.ll b/llvm/test/CodeGen/AArch64/machine-licm-sink-instr.ll new file mode 100644 index 000000000000..f8d53a574dd2 --- /dev/null +++ b/llvm/test/CodeGen/AArch64/machine-licm-sink-instr.ll @@ -0,0 +1,176 @@ +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py +; RUN: llc < %s -mtriple=aarch64 -sink-insts-to-avoid-spills | FileCheck %s + +target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" + +@A = external dso_local global [100 x i32], align 4 + +define i32 @sink_load_and_copy(i32 %n) { +; CHECK-LABEL: sink_load_and_copy: +; CHECK: // %bb.0: // %entry +; CHECK-NEXT: stp x30, x21, [sp, #-32]! // 16-byte Folded Spill +; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill +; CHECK-NEXT: .cfi_def_cfa_offset 32 +; CHECK-NEXT: .cfi_offset w19, -8 +; CHECK-NEXT: .cfi_offset w20, -16 +; CHECK-NEXT: .cfi_offset w21, -24 +; CHECK-NEXT: .cfi_offset w30, -32 +; CHECK-NEXT: mov w19, w0 +; CHECK-NEXT: cmp w0, #1 // =1 +; CHECK-NEXT: b.lt .LBB0_3 +; CHECK-NEXT: // %bb.1: // %for.body.preheader +; CHECK-NEXT: adrp x8, A +; CHECK-NEXT: ldr w21, [x8, :lo12:A] +; CHECK-NEXT: mov w20, w19 +; CHECK-NEXT: .LBB0_2: // %for.body +; CHECK-NEXT: // =>This Inner Loop Header: Depth=1 +; CHECK-NEXT: mov w0, w21 +; CHECK-NEXT: bl _Z3usei +; CHECK-NEXT: subs w19, w19, #1 // =1 +; CHECK-NEXT: sdiv w20, w20, w0 +; CHECK-NEXT: b.ne .LBB0_2 +; CHECK-NEXT: b .LBB0_4 +; CHECK-NEXT: .LBB0_3: +; CHECK-NEXT: mov w20, w19 +; CHECK-NEXT: .LBB0_4: // %for.cond.cleanup +; CHECK-NEXT: mov w0, w20 +; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload +; CHECK-NEXT: ldp x30, x21, [sp], #32 // 16-byte Folded Reload +; CHECK-NEXT: ret +entry: + %cmp63 = icmp sgt i32 %n, 0 + br i1 %cmp63, label %for.body.preheader, label %for.cond.cleanup + +for.body.preheader: + %0 = load i32, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i64 0, i64 0), align 4 + br label %for.body + +for.cond.cleanup: + %sum.0.lcssa = phi i32 [ %n, %entry ], [ %div, %for.body ] + ret i32 %sum.0.lcssa + +for.body: + %lsr.iv = phi i32 [ %n, %for.body.preheader ], [ %lsr.iv.next, %for.body ] + %sum.065 = phi i32 [ %div, %for.body ], [ %n, %for.body.preheader ] + %call = tail call i32 @_Z3usei(i32 %0) + %div = sdiv i32 %sum.065, %call + %lsr.iv.next = add i32 %lsr.iv, -1 + %exitcond.not = icmp eq i32 %lsr.iv.next, 0 + br i1 %exitcond.not, label %for.cond.cleanup, label %for.body +} + +define i32 @cant_sink_successive_call(i32 %n) { +; CHECK-LABEL: cant_sink_successive_call: +; CHECK: // %bb.0: // %entry +; CHECK-NEXT: stp x30, x21, [sp, #-32]! // 16-byte Folded Spill +; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill +; CHECK-NEXT: .cfi_def_cfa_offset 32 +; CHECK-NEXT: .cfi_offset w19, -8 +; CHECK-NEXT: .cfi_offset w20, -16 +; CHECK-NEXT: .cfi_offset w21, -24 +; CHECK-NEXT: .cfi_offset w30, -32 +; CHECK-NEXT: mov w19, w0 +; CHECK-NEXT: cmp w0, #1 // =1 +; CHECK-NEXT: b.lt .LBB1_3 +; CHECK-NEXT: // %bb.1: // %for.body.preheader +; CHECK-NEXT: adrp x8, A +; CHECK-NEXT: ldr w20, [x8, :lo12:A] +; CHECK-NEXT: mov w0, w19 +; CHECK-NEXT: bl _Z3usei +; CHECK-NEXT: mov w21, w19 +; CHECK-NEXT: .LBB1_2: // %for.body +; CHECK-NEXT: // =>This Inner Loop Header: Depth=1 +; CHECK-NEXT: mov w0, w20 +; CHECK-NEXT: bl _Z3usei +; CHECK-NEXT: subs w19, w19, #1 // =1 +; CHECK-NEXT: sdiv w21, w21, w0 +; CHECK-NEXT: b.ne .LBB1_2 +; CHECK-NEXT: b .LBB1_4 +; CHECK-NEXT: .LBB1_3: +; CHECK-NEXT: mov w21, w19 +; CHECK-NEXT: .LBB1_4: // %for.cond.cleanup +; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload +; CHECK-NEXT: mov w0, w21 +; CHECK-NEXT: ldp x30, x21, [sp], #32 // 16-byte Folded Reload +; CHECK-NEXT: ret +entry: + %cmp63 = icmp sgt i32 %n, 0 + br i1 %cmp63, label %for.body.preheader, label %for.cond.cleanup + +for.body.preheader: + %0 = load i32, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i64 0, i64 0), align 4 + %call0 = tail call i32 @_Z3usei(i32 %n) + br label %for.body + +for.cond.cleanup: + %sum.0.lcssa = phi i32 [ %n, %entry ], [ %div, %for.body ] + ret i32 %sum.0.lcssa + +for.body: + %lsr.iv = phi i32 [ %n, %for.body.preheader ], [ %lsr.iv.next, %for.body ] + %sum.065 = phi i32 [ %div, %for.body ], [ %n, %for.body.preheader ] + %call = tail call i32 @_Z3usei(i32 %0) + %div = sdiv i32 %sum.065, %call + %lsr.iv.next = add i32 %lsr.iv, -1 + %exitcond.not = icmp eq i32 %lsr.iv.next, 0 + br i1 %exitcond.not, label %for.cond.cleanup, label %for.body +} + +define i32 @cant_sink_successive_store(i32* nocapture readnone %store, i32 %n) { +; CHECK-LABEL: cant_sink_successive_store: +; CHECK: // %bb.0: // %entry +; CHECK-NEXT: stp x30, x21, [sp, #-32]! // 16-byte Folded Spill +; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill +; CHECK-NEXT: .cfi_def_cfa_offset 32 +; CHECK-NEXT: .cfi_offset w19, -8 +; CHECK-NEXT: .cfi_offset w20, -16 +; CHECK-NEXT: .cfi_offset w21, -24 +; CHECK-NEXT: .cfi_offset w30, -32 +; CHECK-NEXT: mov w19, w1 +; CHECK-NEXT: cmp w1, #1 // =1 +; CHECK-NEXT: b.lt .LBB2_3 +; CHECK-NEXT: // %bb.1: // %for.body.preheader +; CHECK-NEXT: adrp x8, A +; CHECK-NEXT: ldr w20, [x8, :lo12:A] +; CHECK-NEXT: mov w8, #42 +; CHECK-NEXT: mov w21, w19 +; CHECK-NEXT: str w8, [x0] +; CHECK-NEXT: .LBB2_2: // %for.body +; CHECK-NEXT: // =>This Inner Loop Header: Depth=1 +; CHECK-NEXT: mov w0, w20 +; CHECK-NEXT: bl _Z3usei +; CHECK-NEXT: subs w19, w19, #1 // =1 +; CHECK-NEXT: sdiv w21, w21, w0 +; CHECK-NEXT: b.ne .LBB2_2 +; CHECK-NEXT: b .LBB2_4 +; CHECK-NEXT: .LBB2_3: +; CHECK-NEXT: mov w21, w19 +; CHECK-NEXT: .LBB2_4: // %for.cond.cleanup +; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload +; CHECK-NEXT: mov w0, w21 +; CHECK-NEXT: ldp x30, x21, [sp], #32 // 16-byte Folded Reload +; CHECK-NEXT: ret +entry: + %cmp63 = icmp sgt i32 %n, 0 + br i1 %cmp63, label %for.body.preheader, label %for.cond.cleanup + +for.body.preheader: + %0 = load i32, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i64 0, i64 0), align 4 + store i32 42, i32* %store, align 4 + br label %for.body + +for.cond.cleanup: + %sum.0.lcssa = phi i32 [ %n, %entry ], [ %div, %for.body ] + ret i32 %sum.0.lcssa + +for.body: + %lsr.iv = phi i32 [ %n, %for.body.preheader ], [ %lsr.iv.next, %for.body ] + %sum.065 = phi i32 [ %div, %for.body ], [ %n, %for.body.preheader ] + %call = tail call i32 @_Z3usei(i32 %0) + %div = sdiv i32 %sum.065, %call + %lsr.iv.next = add i32 %lsr.iv, -1 + %exitcond.not = icmp eq i32 %lsr.iv.next, 0 + br i1 %exitcond.not, label %for.cond.cleanup, label %for.body +} + +declare i32 @_Z3usei(i32) _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
