forked from OSchip/llvm-project
572 lines
21 KiB
LLVM
572 lines
21 KiB
LLVM
; RUN: opt -S -loop-predication < %s 2>&1 | FileCheck %s
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; RUN: opt -S -passes='require<scalar-evolution>,loop(loop-predication)' < %s 2>&1 | FileCheck %s
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declare void @llvm.experimental.guard(i1, ...)
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define i32 @unsigned_loop_0_to_n_ult_check(i32* %array, i32 %length, i32 %n) {
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; CHECK-LABEL: @unsigned_loop_0_to_n_ult_check
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entry:
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%tmp5 = icmp eq i32 %n, 0
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br i1 %tmp5, label %exit, label %loop.preheader
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loop.preheader:
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; CHECK: loop.preheader:
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; CHECK: [[max_index:[^ ]+]] = add i32 %n, -1
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; CHECK-NEXT: [[wide_cond:[^ ]+]] = icmp ult i32 [[max_index]], %length
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; CHECK-NEXT: br label %loop
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br label %loop
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loop:
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; CHECK: loop:
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; CHECK: call void (i1, ...) @llvm.experimental.guard(i1 [[wide_cond]], i32 9) [ "deopt"() ]
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%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
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%i = phi i32 [ %i.next, %loop ], [ 0, %loop.preheader ]
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%within.bounds = icmp ult i32 %i, %length
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call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
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%i.i64 = zext i32 %i to i64
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%array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i.i64
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%array.i = load i32, i32* %array.i.ptr, align 4
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%loop.acc.next = add i32 %loop.acc, %array.i
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%i.next = add nuw i32 %i, 1
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%continue = icmp ult i32 %i.next, %n
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br i1 %continue, label %loop, label %exit
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exit:
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%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
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ret i32 %result
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}
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define i32 @unsigned_loop_0_to_n_ugt_check(i32* %array, i32 %length, i32 %n) {
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; CHECK-LABEL: @unsigned_loop_0_to_n_ugt_check
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entry:
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%tmp5 = icmp eq i32 %n, 0
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br i1 %tmp5, label %exit, label %loop.preheader
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loop.preheader:
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; CHECK: loop.preheader:
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; CHECK: [[max_index:[^ ]+]] = add i32 %n, -1
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; CHECK-NEXT: [[wide_cond:[^ ]+]] = icmp ult i32 [[max_index]], %length
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; CHECK-NEXT: br label %loop
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br label %loop
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loop:
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; CHECK: loop:
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; CHECK: call void (i1, ...) @llvm.experimental.guard(i1 [[wide_cond]], i32 9) [ "deopt"() ]
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%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
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%i = phi i32 [ %i.next, %loop ], [ 0, %loop.preheader ]
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%within.bounds = icmp ugt i32 %length, %i
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call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
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%i.i64 = zext i32 %i to i64
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%array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i.i64
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%array.i = load i32, i32* %array.i.ptr, align 4
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%loop.acc.next = add i32 %loop.acc, %array.i
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%i.next = add nuw i32 %i, 1
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%continue = icmp ult i32 %i.next, %n
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br i1 %continue, label %loop, label %exit
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exit:
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%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
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ret i32 %result
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}
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define i32 @two_range_checks(i32* %array.1, i32 %length.1,
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i32* %array.2, i32 %length.2, i32 %n) {
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; CHECK-LABEL: @two_range_checks
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entry:
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%tmp5 = icmp eq i32 %n, 0
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br i1 %tmp5, label %exit, label %loop.preheader
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loop.preheader:
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; CHECK: loop.preheader:
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; CHECK: [[max_index:[^ ]+]] = add i32 %n, -1
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; CHECK-NEXT: [[wide_cond_1:[^ ]+]] = icmp ult i32 [[max_index]], %length.{{1|2}}
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; CHECK-NEXT: [[wide_cond_2:[^ ]+]] = icmp ult i32 [[max_index]], %length.{{1|2}}
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; CHECK-NEXT: br label %loop
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br label %loop
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loop:
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; CHECK: loop:
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; CHECK: [[wide_cond:[^ ]+]] = and i1 [[wide_cond_1]], [[wide_cond_2]]
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; CHECK: call void (i1, ...) @llvm.experimental.guard(i1 [[wide_cond]], i32 9) [ "deopt"() ]
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%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
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%i = phi i32 [ %i.next, %loop ], [ 0, %loop.preheader ]
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%within.bounds.1 = icmp ult i32 %i, %length.1
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%within.bounds.2 = icmp ult i32 %i, %length.2
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%within.bounds = and i1 %within.bounds.1, %within.bounds.2
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call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
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%i.i64 = zext i32 %i to i64
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%array.1.i.ptr = getelementptr inbounds i32, i32* %array.1, i64 %i.i64
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%array.1.i = load i32, i32* %array.1.i.ptr, align 4
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%loop.acc.1 = add i32 %loop.acc, %array.1.i
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%array.2.i.ptr = getelementptr inbounds i32, i32* %array.2, i64 %i.i64
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%array.2.i = load i32, i32* %array.2.i.ptr, align 4
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%loop.acc.next = add i32 %loop.acc.1, %array.2.i
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%i.next = add nuw i32 %i, 1
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%continue = icmp ult i32 %i.next, %n
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br i1 %continue, label %loop, label %exit
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exit:
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%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
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ret i32 %result
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}
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define i32 @three_range_checks(i32* %array.1, i32 %length.1,
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i32* %array.2, i32 %length.2,
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i32* %array.3, i32 %length.3, i32 %n) {
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; CHECK-LABEL: @three_range_checks
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entry:
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%tmp5 = icmp eq i32 %n, 0
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br i1 %tmp5, label %exit, label %loop.preheader
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loop.preheader:
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; CHECK: loop.preheader:
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; CHECK: [[max_index:[^ ]+]] = add i32 %n, -1
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; CHECK-NEXT: [[wide_cond_1:[^ ]+]] = icmp ult i32 [[max_index]], %length.{{1|2|3}}
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; CHECK-NEXT: [[wide_cond_2:[^ ]+]] = icmp ult i32 [[max_index]], %length.{{1|2|3}}
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; CHECK-NEXT: [[wide_cond_3:[^ ]+]] = icmp ult i32 [[max_index]], %length.{{1|2|3}}
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; CHECK-NEXT: br label %loop
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br label %loop
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loop:
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; CHECK: loop:
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; CHECK: [[wide_cond_and:[^ ]+]] = and i1 [[wide_cond_1]], [[wide_cond_2]]
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; CHECK-NEXT: [[wide_cond:[^ ]+]] = and i1 [[wide_cond_and]], [[wide_cond_3]]
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; CHECK: call void (i1, ...) @llvm.experimental.guard(i1 [[wide_cond]], i32 9) [ "deopt"() ]
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%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
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%i = phi i32 [ %i.next, %loop ], [ 0, %loop.preheader ]
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%within.bounds.1 = icmp ult i32 %i, %length.1
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%within.bounds.2 = icmp ult i32 %i, %length.2
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%within.bounds.3 = icmp ult i32 %i, %length.3
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%within.bounds.1.and.2 = and i1 %within.bounds.1, %within.bounds.2
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%within.bounds = and i1 %within.bounds.1.and.2, %within.bounds.3
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call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
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%i.i64 = zext i32 %i to i64
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%array.1.i.ptr = getelementptr inbounds i32, i32* %array.1, i64 %i.i64
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%array.1.i = load i32, i32* %array.1.i.ptr, align 4
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%loop.acc.1 = add i32 %loop.acc, %array.1.i
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%array.2.i.ptr = getelementptr inbounds i32, i32* %array.2, i64 %i.i64
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%array.2.i = load i32, i32* %array.2.i.ptr, align 4
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%loop.acc.2 = add i32 %loop.acc.1, %array.2.i
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%array.3.i.ptr = getelementptr inbounds i32, i32* %array.3, i64 %i.i64
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%array.3.i = load i32, i32* %array.3.i.ptr, align 4
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%loop.acc.next = add i32 %loop.acc.2, %array.3.i
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%i.next = add nuw i32 %i, 1
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%continue = icmp ult i32 %i.next, %n
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br i1 %continue, label %loop, label %exit
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exit:
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%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
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ret i32 %result
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}
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define i32 @three_guards(i32* %array.1, i32 %length.1,
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i32* %array.2, i32 %length.2,
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i32* %array.3, i32 %length.3, i32 %n) {
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; CHECK-LABEL: @three_guards
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entry:
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%tmp5 = icmp eq i32 %n, 0
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br i1 %tmp5, label %exit, label %loop.preheader
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loop.preheader:
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; CHECK: loop.preheader:
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; CHECK: [[max_index:[^ ]+]] = add i32 %n, -1
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; CHECK-NEXT: [[wide_cond_1:[^ ]+]] = icmp ult i32 [[max_index]], %length.1
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; CHECK-NEXT: [[wide_cond_2:[^ ]+]] = icmp ult i32 [[max_index]], %length.2
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; CHECK-NEXT: [[wide_cond_3:[^ ]+]] = icmp ult i32 [[max_index]], %length.3
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; CHECK-NEXT: br label %loop
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br label %loop
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loop:
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; CHECK: loop:
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; CHECK: call void (i1, ...) @llvm.experimental.guard(i1 [[wide_cond_1]], i32 9) [ "deopt"() ]
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; CHECK: call void (i1, ...) @llvm.experimental.guard(i1 [[wide_cond_2]], i32 9) [ "deopt"() ]
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; CHECK: call void (i1, ...) @llvm.experimental.guard(i1 [[wide_cond_3]], i32 9) [ "deopt"() ]
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%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
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%i = phi i32 [ %i.next, %loop ], [ 0, %loop.preheader ]
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%within.bounds.1 = icmp ult i32 %i, %length.1
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call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds.1, i32 9) [ "deopt"() ]
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%i.i64 = zext i32 %i to i64
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%array.1.i.ptr = getelementptr inbounds i32, i32* %array.1, i64 %i.i64
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%array.1.i = load i32, i32* %array.1.i.ptr, align 4
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%loop.acc.1 = add i32 %loop.acc, %array.1.i
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%within.bounds.2 = icmp ult i32 %i, %length.2
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call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds.2, i32 9) [ "deopt"() ]
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%array.2.i.ptr = getelementptr inbounds i32, i32* %array.2, i64 %i.i64
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%array.2.i = load i32, i32* %array.2.i.ptr, align 4
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%loop.acc.2 = add i32 %loop.acc.1, %array.2.i
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%within.bounds.3 = icmp ult i32 %i, %length.3
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call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds.3, i32 9) [ "deopt"() ]
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%array.3.i.ptr = getelementptr inbounds i32, i32* %array.3, i64 %i.i64
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%array.3.i = load i32, i32* %array.3.i.ptr, align 4
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%loop.acc.next = add i32 %loop.acc.2, %array.3.i
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%i.next = add nuw i32 %i, 1
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%continue = icmp ult i32 %i.next, %n
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br i1 %continue, label %loop, label %exit
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exit:
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%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
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ret i32 %result
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}
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define i32 @signed_loop_start_to_n_sge_0_check(i32* %array, i32 %length, i32 %start, i32 %n) {
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; CHECK-LABEL: @signed_loop_start_to_n_sge_0_check
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entry:
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%tmp5 = icmp eq i32 %n, 0
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br i1 %tmp5, label %exit, label %loop.preheader
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loop.preheader:
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; CHECK: loop.preheader:
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; CHECK-NEXT: [[wide_cond:[^ ]+]] = icmp sge i32 %start, 0
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; CHECK-NEXT: br label %loop
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br label %loop
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loop:
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; CHECK: loop:
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; CHECK: call void (i1, ...) @llvm.experimental.guard(i1 [[wide_cond]], i32 9) [ "deopt"() ]
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%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
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%i = phi i32 [ %i.next, %loop ], [ %start, %loop.preheader ]
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%within.bounds = icmp sge i32 %i, 0
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call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
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%i.i64 = zext i32 %i to i64
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%array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i.i64
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%array.i = load i32, i32* %array.i.ptr, align 4
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%loop.acc.next = add i32 %loop.acc, %array.i
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%i.next = add nsw i32 %i, 1
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%continue = icmp slt i32 %i.next, %n
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br i1 %continue, label %loop, label %exit
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exit:
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%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
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ret i32 %result
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}
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define i32 @signed_loop_start_to_n_upper_slt_length_check(i32* %array, i32 %length, i32 %start, i32 %n) {
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; CHECK-LABEL: @signed_loop_start_to_n_upper_slt_length_check
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entry:
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%tmp5 = icmp sle i32 %n, 0
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br i1 %tmp5, label %exit, label %loop.preheader
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loop.preheader:
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; CHECK: loop.preheader:
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; CHECK: [[start_1:[^ ]+]] = add i32 %start, 1
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; CHECK-NEXT: [[n_sgt_start_1:[^ ]+]] = icmp sgt i32 %n, [[start_1]]
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; CHECK-NEXT: [[smax:[^ ]+]] = select i1 [[n_sgt_start_1]], i32 %n, i32 [[start_1]]
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; CHECK-NEXT: [[max_index:[^ ]+]] = add i32 [[smax]], -1
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; CHECK-NEXT: [[wide_cond:[^ ]+]] = icmp slt i32 [[max_index]], %length
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; CHECK-NEXT: br label %loop
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br label %loop
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loop:
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; CHECK: loop:
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; CHECK: call void (i1, ...) @llvm.experimental.guard(i1 [[wide_cond]], i32 9) [ "deopt"() ]
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%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
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%i = phi i32 [ %i.next, %loop ], [ %start, %loop.preheader ]
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%within.bounds = icmp slt i32 %i, %length
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call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
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%i.i64 = zext i32 %i to i64
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%array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i.i64
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%array.i = load i32, i32* %array.i.ptr, align 4
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%loop.acc.next = add i32 %loop.acc, %array.i
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%i.next = add nsw i32 %i, 1
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%continue = icmp slt i32 %i.next, %n
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br i1 %continue, label %loop, label %exit
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exit:
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%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
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ret i32 %result
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}
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define i32 @signed_loop_start_to_n_both_checks(i32* %array, i32 %length, i32 %start, i32 %n) {
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; CHECK-LABEL: @signed_loop_start_to_n_both_checks
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entry:
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%tmp5 = icmp sle i32 %n, 0
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br i1 %tmp5, label %exit, label %loop.preheader
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loop.preheader:
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; CHECK: loop.preheader:
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; CHECK: [[lower_check:[^ ]+]] = icmp sge i32 %start, 0
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; CHECK-NEXT: [[start_1:[^ ]+]] = add i32 %start, 1
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; CHECK-NEXT: [[n_sgt_start_1:[^ ]+]] = icmp sgt i32 %n, [[start_1]]
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; CHECK-NEXT: [[smax:[^ ]+]] = select i1 [[n_sgt_start_1]], i32 %n, i32 [[start_1]]
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; CHECK-NEXT: [[max_index:[^ ]+]] = add i32 [[smax]], -1
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; CHECK-NEXT: [[upper_check:[^ ]+]] = icmp slt i32 [[max_index]], %length
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; CHECK-NEXT: br label %loop
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br label %loop
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loop:
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; CHECK: loop:
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; CHECK: [[wide_cond:[^ ]+]] = and i1 [[lower_check]], [[upper_check]]
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[wide_cond]], i32 9) [ "deopt"() ]
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%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
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%i = phi i32 [ %i.next, %loop ], [ %start, %loop.preheader ]
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%within.bounds.1 = icmp slt i32 %i, %length
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%within.bounds.2 = icmp sge i32 %i, 0
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%within.bounds = and i1 %within.bounds.1, %within.bounds.2
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call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
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%i.i64 = zext i32 %i to i64
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%array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i.i64
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%array.i = load i32, i32* %array.i.ptr, align 4
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%loop.acc.next = add i32 %loop.acc, %array.i
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%i.next = add nsw i32 %i, 1
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%continue = icmp slt i32 %i.next, %n
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br i1 %continue, label %loop, label %exit
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exit:
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%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
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ret i32 %result
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}
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define i32 @unsigned_loop_0_to_n_unrelated_condition(i32* %array, i32 %length, i32 %n, i32 %x) {
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; CHECK-LABEL: @unsigned_loop_0_to_n_unrelated_condition
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entry:
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%tmp5 = icmp eq i32 %n, 0
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br i1 %tmp5, label %exit, label %loop.preheader
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loop.preheader:
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; CHECK: loop.preheader:
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; CHECK: [[max_index:[^ ]+]] = add i32 %n, -1
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; CHECK-NEXT: [[wide_cond:[^ ]+]] = icmp ult i32 [[max_index]], %length
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; CHECK-NEXT: br label %loop
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br label %loop
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loop:
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; CHECK: loop:
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; CHECK: %unrelated.cond = icmp ult i32 %x, %length
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; CHECK: [[guard_cond:[^ ]+]] = and i1 %unrelated.cond, [[wide_cond]]
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[guard_cond]], i32 9) [ "deopt"() ]
|
|
%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
|
|
%i = phi i32 [ %i.next, %loop ], [ 0, %loop.preheader ]
|
|
%within.bounds = icmp ult i32 %i, %length
|
|
%unrelated.cond = icmp ult i32 %x, %length
|
|
%guard.cond = and i1 %within.bounds, %unrelated.cond
|
|
call void (i1, ...) @llvm.experimental.guard(i1 %guard.cond, i32 9) [ "deopt"() ]
|
|
|
|
%i.i64 = zext i32 %i to i64
|
|
%array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i.i64
|
|
%array.i = load i32, i32* %array.i.ptr, align 4
|
|
%loop.acc.next = add i32 %loop.acc, %array.i
|
|
|
|
%i.next = add nuw i32 %i, 1
|
|
%continue = icmp ult i32 %i.next, %n
|
|
br i1 %continue, label %loop, label %exit
|
|
|
|
exit:
|
|
%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
|
|
ret i32 %result
|
|
}
|
|
|
|
; Don't change the guard condition if there were no widened subconditions
|
|
define i32 @test_no_widened_conditions(i32* %array, i32 %length, i32 %n, i32 %x1, i32 %x2, i32 %x3) {
|
|
; CHECK-LABEL: @test_no_widened_conditions
|
|
entry:
|
|
%tmp5 = icmp eq i32 %n, 0
|
|
br i1 %tmp5, label %exit, label %loop.preheader
|
|
|
|
loop.preheader:
|
|
; CHECK: loop.preheader:
|
|
; CHECK-NEXT: br label %loop
|
|
br label %loop
|
|
|
|
loop:
|
|
; CHECK: loop:
|
|
; CHECK: %unrelated.cond.1 = icmp eq i32 %x1, %i
|
|
; CHECK-NEXT: %unrelated.cond.2 = icmp eq i32 %x2, %i
|
|
; CHECK-NEXT: %unrelated.cond.3 = icmp eq i32 %x3, %i
|
|
; CHECK-NEXT: %unrelated.cond.and.1 = and i1 %unrelated.cond.1, %unrelated.cond.2
|
|
; CHECK-NEXT: %guard.cond = and i1 %unrelated.cond.and.1, %unrelated.cond.3
|
|
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 %guard.cond, i32 9) [ "deopt"() ]
|
|
%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
|
|
%i = phi i32 [ %i.next, %loop ], [ 0, %loop.preheader ]
|
|
%unrelated.cond.1 = icmp eq i32 %x1, %i
|
|
%unrelated.cond.2 = icmp eq i32 %x2, %i
|
|
%unrelated.cond.3 = icmp eq i32 %x3, %i
|
|
%unrelated.cond.and.1 = and i1 %unrelated.cond.1, %unrelated.cond.2
|
|
%guard.cond = and i1 %unrelated.cond.and.1, %unrelated.cond.3
|
|
|
|
call void (i1, ...) @llvm.experimental.guard(i1 %guard.cond, i32 9) [ "deopt"() ]
|
|
|
|
%i.i64 = zext i32 %i to i64
|
|
%array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i.i64
|
|
%array.i = load i32, i32* %array.i.ptr, align 4
|
|
%loop.acc.next = add i32 %loop.acc, %array.i
|
|
|
|
%i.next = add nuw i32 %i, 1
|
|
%continue = icmp ult i32 %i.next, %n
|
|
br i1 %continue, label %loop, label %exit
|
|
|
|
exit:
|
|
%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
|
|
ret i32 %result
|
|
}
|
|
|
|
define i32 @signed_loop_start_to_n_loop_variant_bound(i32* %array, i32 %x, i32 %start, i32 %n) {
|
|
; CHECK-LABEL: @signed_loop_start_to_n_loop_variant_bound
|
|
entry:
|
|
%tmp5 = icmp sle i32 %n, 0
|
|
br i1 %tmp5, label %exit, label %loop.preheader
|
|
|
|
loop.preheader:
|
|
; CHECK: loop.preheader:
|
|
; CHECK-NEXT: br label %loop
|
|
br label %loop
|
|
|
|
loop:
|
|
; CHECK: loop:
|
|
; CHECK: %bound = add i32 %i, %x
|
|
; CHECK-NEXT: %within.bounds = icmp slt i32 %i, %bound
|
|
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
|
|
%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
|
|
%i = phi i32 [ %i.next, %loop ], [ %start, %loop.preheader ]
|
|
%bound = add i32 %i, %x
|
|
%within.bounds = icmp slt i32 %i, %bound
|
|
call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
|
|
|
|
%i.i64 = zext i32 %i to i64
|
|
%array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i.i64
|
|
%array.i = load i32, i32* %array.i.ptr, align 4
|
|
%loop.acc.next = add i32 %loop.acc, %array.i
|
|
|
|
%i.next = add nsw i32 %i, 1
|
|
%continue = icmp slt i32 %i.next, %n
|
|
br i1 %continue, label %loop, label %exit
|
|
|
|
exit:
|
|
%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
|
|
ret i32 %result
|
|
}
|
|
|
|
define i32 @signed_loop_start_to_n_non_monotonic_predicate(i32* %array, i32 %x, i32 %start, i32 %n) {
|
|
; CHECK-LABEL: @signed_loop_start_to_n_non_monotonic_predicate
|
|
entry:
|
|
%tmp5 = icmp sle i32 %n, 0
|
|
br i1 %tmp5, label %exit, label %loop.preheader
|
|
|
|
loop.preheader:
|
|
; CHECK: loop.preheader:
|
|
; CHECK-NEXT: br label %loop
|
|
br label %loop
|
|
|
|
loop:
|
|
; CHECK: loop:
|
|
; CHECK: %guard.cond = icmp eq i32 %i, %x
|
|
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 %guard.cond, i32 9) [ "deopt"() ]
|
|
%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
|
|
%i = phi i32 [ %i.next, %loop ], [ %start, %loop.preheader ]
|
|
%guard.cond = icmp eq i32 %i, %x
|
|
call void (i1, ...) @llvm.experimental.guard(i1 %guard.cond, i32 9) [ "deopt"() ]
|
|
|
|
%i.i64 = zext i32 %i to i64
|
|
%array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i.i64
|
|
%array.i = load i32, i32* %array.i.ptr, align 4
|
|
%loop.acc.next = add i32 %loop.acc, %array.i
|
|
|
|
%i.next = add nsw i32 %i, 1
|
|
%continue = icmp slt i32 %i.next, %n
|
|
br i1 %continue, label %loop, label %exit
|
|
|
|
exit:
|
|
%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
|
|
ret i32 %result
|
|
}
|
|
|
|
define i32 @unsigned_loop_0_to_n_hoist_length(i32* %array, i16 %length.i16, i32 %n) {
|
|
; CHECK-LABEL: @unsigned_loop_0_to_n_hoist_length
|
|
entry:
|
|
%tmp5 = icmp eq i32 %n, 0
|
|
br i1 %tmp5, label %exit, label %loop.preheader
|
|
|
|
loop.preheader:
|
|
; CHECK: loop.preheader:
|
|
; CHECK: [[max_index:[^ ]+]] = add i32 %n, -1
|
|
; CHECK-NEXT: [[length:[^ ]+]] = zext i16 %length.i16 to i32
|
|
; CHECK-NEXT: [[wide_cond:[^ ]+]] = icmp ult i32 [[max_index]], [[length]]
|
|
; CHECK-NEXT: br label %loop
|
|
br label %loop
|
|
|
|
loop:
|
|
; CHECK: loop:
|
|
; CHECK: call void (i1, ...) @llvm.experimental.guard(i1 [[wide_cond]], i32 9) [ "deopt"() ]
|
|
%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
|
|
%i = phi i32 [ %i.next, %loop ], [ 0, %loop.preheader ]
|
|
%length = zext i16 %length.i16 to i32
|
|
%within.bounds = icmp ult i32 %i, %length
|
|
call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
|
|
|
|
%i.i64 = zext i32 %i to i64
|
|
%array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i.i64
|
|
%array.i = load i32, i32* %array.i.ptr, align 4
|
|
%loop.acc.next = add i32 %loop.acc, %array.i
|
|
|
|
%i.next = add nuw i32 %i, 1
|
|
%continue = icmp ult i32 %i.next, %n
|
|
br i1 %continue, label %loop, label %exit
|
|
|
|
exit:
|
|
%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
|
|
ret i32 %result
|
|
}
|
|
|
|
define i32 @unsigned_loop_0_to_n_cant_hoist_length(i32* %array, i32 %length, i32 %divider, i32 %n) {
|
|
; CHECK-LABEL: @unsigned_loop_0_to_n_cant_hoist_length
|
|
entry:
|
|
%tmp5 = icmp eq i32 %n, 0
|
|
br i1 %tmp5, label %exit, label %loop.preheader
|
|
|
|
loop.preheader:
|
|
; CHECK: loop.preheader:
|
|
; CHECK-NEXT: br label %loop
|
|
br label %loop
|
|
|
|
loop:
|
|
; CHECK: loop:
|
|
; CHECK-NEXT: %loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
|
|
; CHECK-NEXT: %i = phi i32 [ %i.next, %loop ], [ 0, %loop.preheader ]
|
|
; CHECK-NEXT: %length.udiv = udiv i32 %length, %divider
|
|
; CHECK-NEXT: %within.bounds = icmp ult i32 %i, %length.udiv
|
|
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
|
|
%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
|
|
%i = phi i32 [ %i.next, %loop ], [ 0, %loop.preheader ]
|
|
%length.udiv = udiv i32 %length, %divider
|
|
%within.bounds = icmp ult i32 %i, %length.udiv
|
|
call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
|
|
|
|
%i.i64 = zext i32 %i to i64
|
|
%array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i.i64
|
|
%array.i = load i32, i32* %array.i.ptr, align 4
|
|
%loop.acc.next = add i32 %loop.acc, %array.i
|
|
|
|
%i.next = add nuw i32 %i, 1
|
|
%continue = icmp ult i32 %i.next, %n
|
|
br i1 %continue, label %loop, label %exit
|
|
|
|
exit:
|
|
%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
|
|
ret i32 %result
|
|
}
|