derek.holloway
7502bf64a4
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211 lines
7.8 KiB
LLVM
211 lines
7.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
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; RUN: opt -S -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-classify-expressions=0 < %s 2>&1 | FileCheck %s
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define void @s32_max1(i32 %n, ptr %p) {
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; CHECK-LABEL: 's32_max1'
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; CHECK-NEXT: Determining loop execution counts for: @s32_max1
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; CHECK-NEXT: Loop %do.body: backedge-taken count is ((-1 * %n) + ((1 + %n) smax %n))
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; CHECK-NEXT: Loop %do.body: constant max backedge-taken count is i32 1, actual taken count either this or zero.
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; CHECK-NEXT: Loop %do.body: symbolic max backedge-taken count is ((-1 * %n) + ((1 + %n) smax %n)), actual taken count either this or zero.
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; CHECK-NEXT: Loop %do.body: Trip multiple is 1
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;
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entry:
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%add = add i32 %n, 1
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br label %do.body
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do.body:
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%i.0 = phi i32 [ %n, %entry ], [ %inc, %do.body ]
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%arrayidx = getelementptr i32, ptr %p, i32 %i.0
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store i32 %i.0, ptr %arrayidx, align 4
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%inc = add i32 %i.0, 1
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%cmp = icmp slt i32 %i.0, %add
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br i1 %cmp, label %do.body, label %do.end ; taken either 0 or 1 times
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do.end:
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ret void
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}
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define void @s32_max2(i32 %n, ptr %p) {
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; CHECK-LABEL: 's32_max2'
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; CHECK-NEXT: Determining loop execution counts for: @s32_max2
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; CHECK-NEXT: Loop %do.body: backedge-taken count is ((-1 * %n) + ((2 + %n) smax %n))
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; CHECK-NEXT: Loop %do.body: constant max backedge-taken count is i32 2, actual taken count either this or zero.
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; CHECK-NEXT: Loop %do.body: symbolic max backedge-taken count is ((-1 * %n) + ((2 + %n) smax %n)), actual taken count either this or zero.
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; CHECK-NEXT: Loop %do.body: Trip multiple is 1
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;
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entry:
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%add = add i32 %n, 2
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br label %do.body
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do.body:
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%i.0 = phi i32 [ %n, %entry ], [ %inc, %do.body ]
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%arrayidx = getelementptr i32, ptr %p, i32 %i.0
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store i32 %i.0, ptr %arrayidx, align 4
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%inc = add i32 %i.0, 1
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%cmp = icmp slt i32 %i.0, %add
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br i1 %cmp, label %do.body, label %do.end ; taken either 0 or 2 times
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do.end:
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ret void
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}
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define void @s32_maxx(i32 %n, i32 %x, ptr %p) {
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; CHECK-LABEL: 's32_maxx'
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; CHECK-NEXT: Determining loop execution counts for: @s32_maxx
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; CHECK-NEXT: Loop %do.body: backedge-taken count is ((-1 * %n) + ((%n + %x) smax %n))
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; CHECK-NEXT: Loop %do.body: constant max backedge-taken count is i32 -1
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; CHECK-NEXT: Loop %do.body: symbolic max backedge-taken count is ((-1 * %n) + ((%n + %x) smax %n))
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; CHECK-NEXT: Loop %do.body: Trip multiple is 1
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;
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entry:
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%add = add i32 %x, %n
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br label %do.body
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do.body:
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%i.0 = phi i32 [ %n, %entry ], [ %inc, %do.body ]
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%arrayidx = getelementptr i32, ptr %p, i32 %i.0
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store i32 %i.0, ptr %arrayidx, align 4
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%inc = add i32 %i.0, 1
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%cmp = icmp slt i32 %i.0, %add
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br i1 %cmp, label %do.body, label %do.end ; taken either 0 or x times
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do.end:
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ret void
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}
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define void @s32_max2_unpredictable_exit(i32 %n, i32 %x, ptr %p) {
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; CHECK-LABEL: 's32_max2_unpredictable_exit'
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; CHECK-NEXT: Determining loop execution counts for: @s32_max2_unpredictable_exit
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; CHECK-NEXT: Loop %do.body: <multiple exits> backedge-taken count is (((-1 * %n) + ((2 + %n) smax %n)) umin ((-1 * %n) + %x))
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; CHECK-NEXT: exit count for do.body: ((-1 * %n) + %x)
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; CHECK-NEXT: exit count for if.end: ((-1 * %n) + ((2 + %n) smax %n))
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; CHECK-NEXT: Loop %do.body: constant max backedge-taken count is i32 2
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; CHECK-NEXT: Loop %do.body: symbolic max backedge-taken count is (((-1 * %n) + ((2 + %n) smax %n)) umin ((-1 * %n) + %x))
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; CHECK-NEXT: symbolic max exit count for do.body: ((-1 * %n) + %x)
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; CHECK-NEXT: symbolic max exit count for if.end: ((-1 * %n) + ((2 + %n) smax %n))
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; CHECK-NEXT: Loop %do.body: Trip multiple is 1
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;
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entry:
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%add = add i32 %n, 2
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br label %do.body
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do.body:
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%i.0 = phi i32 [ %n, %entry ], [ %inc, %if.end ]
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%cmp = icmp eq i32 %i.0, %x
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br i1 %cmp, label %do.end, label %if.end ; unpredictable
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if.end:
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%arrayidx = getelementptr i32, ptr %p, i32 %i.0
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store i32 %i.0, ptr %arrayidx, align 4
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%inc = add i32 %i.0, 1
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%cmp1 = icmp slt i32 %i.0, %add
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br i1 %cmp1, label %do.body, label %do.end ; taken either 0 or 2 times
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do.end:
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ret void
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}
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define void @u32_max1(i32 %n, ptr %p) {
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; CHECK-LABEL: 'u32_max1'
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; CHECK-NEXT: Determining loop execution counts for: @u32_max1
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; CHECK-NEXT: Loop %do.body: backedge-taken count is ((-1 * %n) + ((1 + %n) umax %n))
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; CHECK-NEXT: Loop %do.body: constant max backedge-taken count is i32 1, actual taken count either this or zero.
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; CHECK-NEXT: Loop %do.body: symbolic max backedge-taken count is ((-1 * %n) + ((1 + %n) umax %n)), actual taken count either this or zero.
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; CHECK-NEXT: Loop %do.body: Trip multiple is 1
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;
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entry:
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%add = add i32 %n, 1
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br label %do.body
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do.body:
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%i.0 = phi i32 [ %n, %entry ], [ %inc, %do.body ]
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%arrayidx = getelementptr i32, ptr %p, i32 %i.0
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store i32 %i.0, ptr %arrayidx, align 4
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%inc = add i32 %i.0, 1
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%cmp = icmp ult i32 %i.0, %add
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br i1 %cmp, label %do.body, label %do.end ; taken either 0 or 1 times
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do.end:
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ret void
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}
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define void @u32_max2(i32 %n, ptr %p) {
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; CHECK-LABEL: 'u32_max2'
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; CHECK-NEXT: Determining loop execution counts for: @u32_max2
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; CHECK-NEXT: Loop %do.body: backedge-taken count is ((-1 * %n) + ((2 + %n) umax %n))
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; CHECK-NEXT: Loop %do.body: constant max backedge-taken count is i32 2, actual taken count either this or zero.
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; CHECK-NEXT: Loop %do.body: symbolic max backedge-taken count is ((-1 * %n) + ((2 + %n) umax %n)), actual taken count either this or zero.
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; CHECK-NEXT: Loop %do.body: Trip multiple is 1
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;
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entry:
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%add = add i32 %n, 2
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br label %do.body
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do.body:
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%i.0 = phi i32 [ %n, %entry ], [ %inc, %do.body ]
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%arrayidx = getelementptr i32, ptr %p, i32 %i.0
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store i32 %i.0, ptr %arrayidx, align 4
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%inc = add i32 %i.0, 1
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%cmp = icmp ult i32 %i.0, %add
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br i1 %cmp, label %do.body, label %do.end ; taken either 0 or 2 times
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do.end:
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ret void
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}
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define void @u32_maxx(i32 %n, i32 %x, ptr %p) {
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; CHECK-LABEL: 'u32_maxx'
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; CHECK-NEXT: Determining loop execution counts for: @u32_maxx
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; CHECK-NEXT: Loop %do.body: backedge-taken count is ((-1 * %n) + ((%n + %x) umax %n))
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; CHECK-NEXT: Loop %do.body: constant max backedge-taken count is i32 -1
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; CHECK-NEXT: Loop %do.body: symbolic max backedge-taken count is ((-1 * %n) + ((%n + %x) umax %n))
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; CHECK-NEXT: Loop %do.body: Trip multiple is 1
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;
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entry:
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%add = add i32 %x, %n
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br label %do.body
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do.body:
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%i.0 = phi i32 [ %n, %entry ], [ %inc, %do.body ]
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%arrayidx = getelementptr i32, ptr %p, i32 %i.0
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store i32 %i.0, ptr %arrayidx, align 4
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%inc = add i32 %i.0, 1
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%cmp = icmp ult i32 %i.0, %add
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br i1 %cmp, label %do.body, label %do.end ; taken either 0 or x times
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do.end:
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ret void
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}
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define void @u32_max2_unpredictable_exit(i32 %n, i32 %x, ptr %p) {
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; CHECK-LABEL: 'u32_max2_unpredictable_exit'
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; CHECK-NEXT: Determining loop execution counts for: @u32_max2_unpredictable_exit
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; CHECK-NEXT: Loop %do.body: <multiple exits> backedge-taken count is (((-1 * %n) + ((2 + %n) umax %n)) umin ((-1 * %n) + %x))
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; CHECK-NEXT: exit count for do.body: ((-1 * %n) + %x)
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; CHECK-NEXT: exit count for if.end: ((-1 * %n) + ((2 + %n) umax %n))
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; CHECK-NEXT: Loop %do.body: constant max backedge-taken count is i32 2
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; CHECK-NEXT: Loop %do.body: symbolic max backedge-taken count is (((-1 * %n) + ((2 + %n) umax %n)) umin ((-1 * %n) + %x))
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; CHECK-NEXT: symbolic max exit count for do.body: ((-1 * %n) + %x)
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; CHECK-NEXT: symbolic max exit count for if.end: ((-1 * %n) + ((2 + %n) umax %n))
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; CHECK-NEXT: Loop %do.body: Trip multiple is 1
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;
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entry:
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%add = add i32 %n, 2
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br label %do.body
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do.body:
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%i.0 = phi i32 [ %n, %entry ], [ %inc, %if.end ]
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%cmp = icmp eq i32 %i.0, %x
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br i1 %cmp, label %do.end, label %if.end ; unpredictable
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if.end:
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%arrayidx = getelementptr i32, ptr %p, i32 %i.0
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store i32 %i.0, ptr %arrayidx, align 4
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%inc = add i32 %i.0, 1
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%cmp1 = icmp ult i32 %i.0, %add
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br i1 %cmp1, label %do.body, label %do.end ; taken either 0 or 2 times
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do.end:
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ret void
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}
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